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Far-Fetched Time Travel Concept Receives Private Funds

WED Fan writes "A University of Washington researcher who couldn't find funds the old fashioned way has raised funds from private parties to continue with his studies of 'time travel'. He is studying the Einstein-Podolsky-Rosen Paradox. Basically, using spooky action, he wants to be able to use entangled pairs to send messages, not only through space, but also in time. 'As the evidence for this has accumulated, several fairly contorted and unsatisfying efforts have been aimed at solving the puzzle. Cramer has proposed an explanation that doesn't violate the speed of light but does kind of mess with the traditional concept of time.' Despite the implausibility of the science here laypeople have been inspired by the researcher's idea, enough to donate almost $35,000 to his project."

505 comments

  1. obligatory by uolamer · · Score: 5, Funny

    Can I get the investors info?

    I have a bridge that...
    In soviet Russia Time Travel You.
    Is this the Lt. Commander Data theory or the Spock theory of time travel?
    if you do manage to do this, send me a copy of all the sports results for the next 100 years and history of the stocks, etc.

    Seriously.. If this was possible, i can only start to imagine how the wrong people or even the right people could really mess up things with their first little test.

    --
    s/©//g
    1. Re:obligatory by Intron · · Score: 5, Insightful

      If this worked then there would already be investors lined up who have sent messages to themselves from the future.

      --
      Intron: the portion of DNA which expresses nothing useful.
    2. Re:obligatory by MontyApollo · · Score: 1

      >>if you do manage to do this, send me a copy of all the sports results for the next 100 years and history of the stocks, etc.

      It's been awhile since I have read anything about it so I might not be remembering it correctly, but I think there is an interpretation of the Many Worlds/Parallel Universe view of quantum mechanics that a new instance of reality would be created (a new universe) that would effectively provide a level of separation. The info recieved in the past might not be accurate for this new universe, because in this new universe a different future was possible. Or something like that...It has been awhile. I've seen it used to alleviate the paradox of going back in time and killing your grandfather.

    3. Re:obligatory by MightyYar · · Score: 0, Flamebait

      The investors' info probably looks a lot like those that gave money for the Creation Museum. There's a lot more money than intelligence out there.

      --
      W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
    4. Re:obligatory by oliverthered · · Score: 5, Interesting

      it could be that you can't send messages back any earlier than the time the message was created, effectively only slowing time down so it take less time for the message to arrive. Less time could be no time at all so the message arrives when it's sent.

      This won't allow you to send messages 'back' in time though.

      --
      thank God the internet isn't a human right.
    5. Re:obligatory by dfiguero · · Score: 5, Funny

      Note to self from the future: don't invest in this idea.

      --
      My penguin ate my sig
    6. Re:obligatory by Arthur+B. · · Score: 1

      You still make money in the many world interpretation. Though trading on a sport event might not be your best bet, By having a view of the future you can sell or invest in right technologies etc, this is robust enough not to be affected by small changes.

      --
      \u262D = \u5350
    7. Re:obligatory by alisson · · Score: 1

      Except that would change the timeline so alternate versions of their future selves would get rich :D

    8. Re:obligatory by CommunistHamster · · Score: 5, Insightful

      The trouble is that there is no such thing as universal simultaneity. What clock do we measure by when measuring "before the message was created"?

    9. Re:obligatory by MontyApollo · · Score: 1

      Correct, you would have to be careful and hope a lot of info can be transmitted. Info would be most accurate for the near future. If you could only transmit "Buy IBM Stock" back into the first part of the twentieth century, it could pay off big or not at all for the reciever. The reciever could also interpret it as typewriters are the wave of the future.

    10. Re:obligatory by harrkev · · Score: 1

      but I think there is an interpretation of the Many Worlds/Parallel Universe view of quantum mechanics that a new instance of reality would be created (a new universe) that would effectively provide a level of separation.
      What you are citing is, IIRC, the "many worlds" interpretation of quantum theory.

      The math of quantum theory only predicts the results of an experiment, however there is no proof for the "multiple universes" theory, nor is there an experiment that can prove it. Multiple diverging universes is more of a philosophy, and one that I find to be rather absurd on the face of it. Another option is the "copenhagen" interpretation, and there are others. Some wikipedia reading for you:

      http://en.wikipedia.org/wiki/Interpretation_of_qua ntum_mechanics
      http://en.wikipedia.org/wiki/Copenhagen_interpreta tion_of_quantum_mechanics
      http://en.wikipedia.org/wiki/Many-worlds_interpret ation

      I remember reading about one that made a lot of sense to me (bit I can't recall the name) that relied on photons traveling backwards in time to resolve the "spooky action at a distance" problem. The rules were structured such that time travel was impossible, as you could not send "information" backwards. If you accept that it is possible for photons to go backwards in time, it solves a lot of the other messiness that quantum theory generates. Anybody have any links on this?
      --
      "-1 Troll" is the apparently the same as "-1 I disagree with you."
    11. Re:obligatory by brunascle · · Score: 0

      you can pretty much already do that, though, using special relativity. motion and acceleration/gravity affect the speed of time relative to something else, so if you sent something off in a rocket ship and it came back, a clock on the ship would not match a clock that stayed on earth. IIRC, less time would elapse on the ship than on earth (could be vice-versa).

    12. Re:obligatory by brunascle · · Score: 3, Informative

      i think you're thinking of the transactional interpretation which is apparently what the researcher subscribes to.

      i actually like the many-worlds theory. i find it easier to grasp.

    13. Re:obligatory by PPH · · Score: 4, Funny

      According to a November 12, 2010 article in Rupert Murdoch's Wall Street Journal, this was exposed as an investment scam and the responsible parties have all been charged by the USDOJ Attorney General Sam Waterston.

      --
      Have gnu, will travel.
    14. Re:obligatory by WED+Fan · · Score: 2, Funny

      it could be that you can't send messages back any earlier than the time the message was created, effectively only slowing time down so it take less time for the message to arrive. Less time could be no time at all so the message arrives when it's sent.

      So, how do you weed through the noise? How do you know what pair to listen to when you don't even know a message has been sent?

      Weaponize this sucker, grab an intangled pair in a critical system, like a reactor, twist the sucker until it does something bad. Boom, Three Mile Island goes into shut down because an Iranian...oh, wait.

      Turn this into an industrial sabotage device, grab an intangled pair from a critical processor, twist the sucker, Intel turns out faulty math co-processors in the mid-90's...oh, wait.

      Blimps...New Jersey...oh, wait.

      --
      Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong fix.
    15. Re:obligatory by phoomp · · Score: 1

      If communicating across time is possible, the first test will have already occurred at some point in time. Nothing appears to be messed up, so either it didn't work at all, or it went off without a hitch. Of course, the existence in which I'm writing this could be completely different from the existence prior to the test, but it all seems good to this me, so, meh.

    16. Re:obligatory by KDR_11k · · Score: 1

      I think he wants FTL travel, though, which certainly violates special relativity.

      --
      Justice is the sheep getting arrested while an impartial judge declares the vote void.
    17. Re:obligatory by MontyApollo · · Score: 1

      >>What you are citing is, IIRC, the "many worlds" interpretation of quantum theory.

      yeah, "Many Worlds/Parallel Universe" = "many worlds"

      I was talking about its role in time travel. There was an article I read years ago, I think in Scientific American, that discussed how the many worlds interpretation solved the paradox problems in time travel. I think the authors were big supporters of the many worlds interpretation, and they claimed that certain calculations in quantum mechanics required the assumption of many worlds, though others considered it just a mathematical convenience.

    18. Re:obligatory by e2d2 · · Score: 1

      Seriously.. If this was possible, i can only start to imagine how the wrong people or even the right people could really mess up things with their first little test.

      Don't worry, you'll never know time changed anyway.

      Think about it. If an entire time line has changed you would simply not know if it has occurred or not. But then this delves into alternate time lines, etc. All ideas of fantasy right now.

      If time travel really is possible most likely it will be on a very small scale and measurable only at the sub atomic level, where "bending time" becomes possible. Sure it may destroy the current theories of light/space/time, but it won't let you go back and kill your grandfather. Course I base that on my opinion because I'm not actually a time traveler.

    19. Re:obligatory by sconeu · · Score: 2, Informative

      I'd say he subscribes to it... He *developed* it!

      --
      General Relativity: Space-time tells matter where to go; Matter tells space-time what shape to be.
    20. Re:obligatory by GoCanes · · Score: 1

      What makes you think it went off without a hitch? Just look around...

    21. Re:obligatory by KDR_11k · · Score: 1

      That is assuming there is such a thing as an alternate future self.

      --
      Justice is the sheep getting arrested while an impartial judge declares the vote void.
    22. Re:obligatory by corifornia · · Score: 0

      If there was such thing as a time machine does anyone believe that you would be able to travel back in time to a point where the machine didn't exist?

      What I always found interesting was the idea that the machine itself travels through time or does it move the person within through time? If it was simply moving the person, then the machine would have to exist in the destination time to receive the "person." Right?

      --
      crap.
    23. Re:obligatory by The+One+and+Only · · Score: 1

      I think the authors were big supporters of the many worlds interpretation, and they claimed that certain calculations in quantum mechanics required the assumption of many worlds, though others considered it just a mathematical convenience.

      Philosophy does the same thing. In philosophy we talk about "possible worlds"--a "possible world" is a world that doesn't contradict itself. The world we live in is a possible world, of course, but it is also the actual world (according to the conventional interpretation), while the possible world in which Al Gore is President is possible but not actual. (An example of an impossible world would be the world in which 1+1=3.)

      Anyway, long after we all became used to talking about possible worlds as a convenience, here comes David Lewis with "modal realism"--the idea that possible worlds actually exist, and by "the actual world" we're only talking about the world we happen to be in. Lewis famously characterizes the most common objection to this as the "incredulous stare".

      --
      In Repressive Burma, it's not just your connection that dies. slashdot.org/comments.pl?sid=314547&cid=20819199
    24. Re:obligatory by KDR_11k · · Score: 0

      Personally I prefer non-dimensional time since it would automatically prohibit all time travel and other paradoxes (the other way would be a dimensional time that's written out completely (otherwise it violates conservation of mass) which would obviously be static and as such have no issue with time travel either). No idea how many experiments show a dimensional time though, I think it's required to explain some phenomena.

      --
      Justice is the sheep getting arrested while an impartial judge declares the vote void.
    25. Re:obligatory by alisson · · Score: 1

      Well I would know.

    26. Re:obligatory by tbo · · Score: 2, Funny

      Disclaimer: I am a physicist who studies quantum information.

      You still make money in the many world interpretation. Though trading on a sport event might not be your best bet, By having a view of the future you can sell or invest in right technologies etc, this is robust enough not to be affected by small changes.

      Making money in Many Worlds is easy, even without time travel. Suppose you want to bet on who will win the World Series. Get some quantum bits, and decide beforehand on what (orthogonal) states of those qubits correspond to which teams. Prepare a superposition of all 30 possible teams. Now, measure your state, and bet all your money on whichever team your measurement tells you. Wait for the world series to finish, then either collect all your winnings, or, if you didn't win, kill yourself.

      In all worlds where you're still alive, you'll have won a lot of money.

      Note to theoretical computer scientists: this is very similar to how someone (who believes in Many Worlds) might try to compute the answer to a problem in the complexity class Post-BQP.
      Note to everyone else: don't try this at home.

    27. Re:obligatory by Anonymous Coward · · Score: 0

      John Cramer ... isn't that the guy who called some guy a [n-word] in a routine at a comedy club?

    28. Re:obligatory by Anonymous Coward · · Score: 0

      >>John Cramer ... isn't that the guy who called some guy a [n-word] in a routine at a comedy club?

      Nah, you're getting him confused with the alter ego of Cosmo Kramer. Kramer is the one who refused to wear the red ribbon and pissed off a bunch of fags...

    29. Re:obligatory by jollyreaper · · Score: 1

      If this worked then there would already be investors lined up who have sent messages to themselves from the future. Or these messages could be from investors who backed the right time travel inventor genius and simply want to throw their rivals off the scent.
      --
      Kwisatz Haderach
      Sell the spice to CHOAM
      This Mahdi took Shaddam's Throne
    30. Re:obligatory by WED+Fan · · Score: 1

      According to a November 12, 2010 article in Rupert Murdoch's Wall Street Journal, this was exposed as an investment scam and the responsible parties have all been charged by the USDOJ Attorney General Sam Waterston.

      Ah, so Fred Thompson is President. I'll place my bet right now with U-Bet.

      --
      Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong fix.
    31. Re:obligatory by Plutonite · · Score: 1

      Only a thought experiment required, performed by Albert Einstein in 1902, and others before him. To talk about time you must talk about events, and events can be described only through some notion of simultaneity, and simultaneity is relative frames of reference and thus dimensional.

      Still, from what I know, the time vector is under standard interpretation like an expanding arrow, it cannot have a negative value despite its dimensionality.

    32. Re:obligatory by coma_bug · · Score: 1
    33. Re:obligatory by MontyApollo · · Score: 1

      Oh, I didn't explicitly state it, but the transmitter guy could not profit, only the receiver. He would be helping out another version of himself in a different universe, but it would not alter his own situation at all.

      But maybe if you figured out how to build the transmitter-reciever combo, there would be an even chance another "you" figured it out first and you would end up being the receiver-guy and thus could profit from your invention.

    34. Re:obligatory by vimh42 · · Score: 1

      "What clock do we measure by when measuring "before the message was created"?"

      Well that's easy. We measure the clock in the time that it before the message was created. All we have to do is travel back in time.

    35. Re:obligatory by sgt_doom · · Score: 1

      Ya know, while I've always wanted to believe in the efficacy of the EPR paradox, Seth Lloyd, quantum mech prof at MIT, states in his book, Programming The Universe that it actually has never been proven. Interesting concept though....

    36. Re:obligatory by aeschenkarnos · · Score: 1

      That would still be useful. Zero ping FTW!

    37. Re:obligatory by Anonymous Coward · · Score: 0

      "your limited ideas of time cause conceptual barriers that operate even when you consider the structure of physical biological life. For example: It is truer to say that heredity operates from the future backward into the past, than it is to say that it operates from the past into the present. Neither statement would be precisely correct in any case, because your present is a poised balance affected as much by the probable future as the probable past."

      Jane Roberts "The Unknown Reality: Vol 1. A Seth Book"

      All those who posted comments on this forum have, it seems, operated from behind that conceptual barrier. All time is happening "at-once". There is no need for silly killed-my-grandmother scenarios. In any such past, as for example killing one's grandfather, THAT "past now" would have its own consistent past, as does every now-moment, irrespective of whatever is or could be done, whenever.

    38. Re:obligatory by macdaddy357 · · Score: 1

      I think this is a clever scam that will take in a lot of "investors". I have another one. Have all your worldly possessions held in trust for you at the end of your life, so that you can claim them when you are re-incarnated, less a nominal fee. All you have to do is will everything to me, and I will handle it for you.

      --
      How ya like dat?
    39. Re:obligatory by theuedimaster · · Score: 1

      Ever heard of Warren Buffett? yea, that's right.

    40. Re:obligatory by Hal_Porter · · Score: 1

      Time travel doesn't make sense unless there are alternative selves many worlds style. Otherwise you end up with paradoxes caused by time travellers changing the past in a way that caused them to never have existed.

      http://en.wikipedia.org/wiki/Time_travel#The_possi bility_of_paradoxes

      Ok, it's possible that time travel is possible and paradoxes are not for some reason other than that the many worlds interpretation of QM is literally true. But it seems more likely that time travel is prevented by some unknown physical law.

      --
      echo -e 'global _start\n _start:\n mov eax, 2\n int 80h\n jmp _start' > a.asm; nasm a.asm -f elf; ld a.o -o a;
    41. Re:obligatory by Ultra-Loser · · Score: 1

      If this was possible, i can only start to imagine how the wrong people or even the right people could really mess up things with their first little test.

      I really can't stand the idea most people have that, if you go back in time and change something, you'll "mess up" the present. This is apparent in almost every time-travel based movie, and probably stems from people thinking "if I had done something else different in the past, then my present would be different, so if I went back in time and changed something, then my present would be different".

      This is one of the most illogical beliefs the general population holds. Simpe logic tells us that if we went back in time and changed the past, then the present would be different. Slightly more complex logic tells us that this couldn't happen, because the present is the way it currently is, and if we were to go back in time and change it, we would be in a different present - one that we know can't exist, because we aren't in it right now. Therefore, we can infer that we *can't* change the present, as there is only one present - and we are experiencing it.

      For example, right now, we're reading slashdot. Let's say that we have a time machine that allows us to go back to yesterday, and we decide to use it to go back in time to set up a DDoS attack against slashdot, and therefore prevent ourselves from reading slashdot today. We know right from the beginning that this mission is doomed to fail. Why? Because if it succeeded, slashdot would be DDoSed right now. Assuming that it's possible to go back in time, all you can do is confirm the present.

    42. Re:obligatory by Thing+1 · · Score: 1

      it could be that you can't send messages back any earlier than the time the message was created, effectively only slowing time down so it take less time for the message to arrive. Less time could be no time at all so the message arrives when it's sent.

      This won't allow you to send messages 'back' in time though.

      Excellent! Then John Cusack wouldn't need an empty room "full of computers" to insert the 7-second delay for a financial transaction to cross the Atlantic!

      Acting on information that's only slightly faster (milliseconds, most likely, and this doesn't include the time it would take to encode the message and "spin up" the communications device) might be a bit more difficult...

      --
      I feel fantastic, and I'm still alive.
    43. Re:obligatory by KDR_11k · · Score: 1

      I dunno, even different time vectors seem strage to me since you can't really move through time (as movement is defined to happen over time and when stuff moves at different speeds it tends to be no longer near each other). Different time "speeds" like what happens at reat elocities seems to me like it'd belong more to some effect that just slows down the processes inside the object (e.g. at higher speeds every particle and stuff inside the object has most of it's energy "capacity"* taken up by that linear motion with less left for its internal processes). After all, we only know that the clock performed less ticks during its fast travel which could just as well happen if all atomic processes were simply slowed down without any actual time stuff being involved. Well, any stuff sience fiction fans could use at least, you'd probably still be able to call it time and use a vector to symbolize the "unspent" eenergy within an object, like the potential energy used for normal scale gravity equations. Wouldn't surprise me if the whole time idea was really just a way to express that and people kept thinking time meant the thing where history happened so we got all that time travel SciFi**.

      *= There's a cap on the energy an object of a given mass can contain, right? After all it can't move faster than lightspeed which limits it to some energy so it doesn't seem too farfetched that the sum of all energies within the object could be constant.

      **= Makes me wonder if Wells's book came out after "dimensional" time was introduced or if he just liked the idea to travel to other time periods.

      --
      Justice is the sheep getting arrested while an impartial judge declares the vote void.
    44. Re:obligatory by dmsuperman · · Score: 1

      By sending themselves messages they have invested in it already, making it happen even sooner and changing the future so that they don't send themself that message, therefore changing the universe so that they do invest at the proper time and send themself a message, therefore By sending themselves messages they have invested in it already, making it happen even sooner and changing the future so that they don't send themself that message, therefore changing the universe so that they do invest at the proper time and send themself a message, therefore By sending themselves messages they have invested in it already, making it happen even sooner and changing the future so that they don't send themself that message, therefore changing the universe so that they do invest at the proper time and send themself a message, therefore.

      I'm so confuzzled.

      --
      :(){ :|:& };: Go!
    45. Re:obligatory by chrysaetos13 · · Score: 1

      There is such a thing as universal simultaneity though. Two things that happen at the same time and at the same place are universally simultaneous in all reference frames. Additionally, our concept of "before" can't be screwed up too badly, because a little playing with slopes on a space-time diagram will show you that if events things happen in different places, the order in which they happened cannot be switched as long as neither is moving faster than the speed of light (which clearly doesn't happen). The spatial order of the two events, however, may reverse. This is why special relativity doesn't screw up our concept of causality, even though it might affect the length of the time interval between two events, or where they occured relative to each other.

    46. Re:obligatory by richie2000 · · Score: 1

      I use the future bike cone as rationalization for driving really, really fast.

      --
      Money for nothing, pix for free
    47. Re:obligatory by revolu7ion · · Score: 1

      I for one welcome our obligatory parent-lord comment...

      --
      Jesus Saves
    48. Re:obligatory by SilicaiMan · · Score: 1

      "it could be that you can't send messages back any earlier than the time the message was created, effectively only slowing time down so it take less time for the message to arrive. Less time could be no time at all so the message arrives when it's sent."

      Err .. this doesn't make sense. In the future, whatever happened now is history, and is readily available. Irrespective of when I create and send a message, it will always be available "now" from that point on. So this "technology" is really useless.

    49. Re:obligatory by Anonymous Coward · · Score: 0

      according to relativity theory space-time can be classified in 3 regions:
      a) absolute future
      b) absolute past
      c) and grey area from which light had no chance to reach us

      an example:
      Sun is 8 light minutes away from earth
      b) the sun as we see or recorded its previous moments is an absolute past
      c) the sun between 8 minutes from now and up to 8 minutes in the future is a grey area we may try to influence (by having established and maintained entangeled particles route to the sun)
      a) the sun more than 8 minutes in the future is absolute future ()

      we dont really know if area c) already exist or not ( does sun really exist there-now as 8 minutes alder than what we see here on earth).

      I can only speculate that in area c) that is 8 minutes of the sun's future can be contacted but the area a) definately cannot be contacted

    50. Re:obligatory by PPH · · Score: 1

      Ah, so Fred Thompson is President. I'll place my bet right now with U-Bet.


      And Alana De La Garza is Secretary of State. :-)

      --
      Have gnu, will travel.
    51. Re:obligatory by Anonymous Coward · · Score: 0

      time travel is prevented by some unknown physical law
      Yeah, it's in the Patriot Act somewhere.
    52. Re:obligatory by Arthur+B. · · Score: 1

      Hey I didn't think of that :)
      I do have issues with quantum immortality though, mostly because it seems to me that there is a continuum of consciousness states...

      I'd say you're most likely to win the bet and end up in coma with 0.0001% self consciousness.

      --
      \u262D = \u5350
    53. Re:obligatory by GWBasic · · Score: 1

      Seriously.. If this was possible, i can only start to imagine how the wrong people or even the right people could really mess up things with their first little test.

      When I read TFA, I got the impression that the scientist thinks that time travel isn't possible, yet quantum mechanics says it is. He's basically exploring an area of quantum mechanics that we don't understand, and is under the assumption that we'll have a better understanding of quantum mechanics as a result of his experiment.

      Looking back at history, I believe that sometimes it's worth looking into crackpot ideas. Apparently, modern chemistry has roots in discoveries made from people trying to turn lead into gold. Likewise, this scientist thinks he might discover something valuable, although probably not time travel.

  2. Its not that far fetched. by LiquidCoooled · · Score: 5, Funny

    Its not that far fetched.

    I invested some money in this guy next week and have been earning a decent return on my investment for the last 3 years.
    I did however feel a little shiver as I considered shorting his stock and for some damned reason pictures of my family have started to fade.

    --
    liqbase :: faster than paper
    1. Re:Its not that far fetched. by Walt+Dismal · · Score: 4, Funny

      According to SEC disclosure statements: "Principal investors, John Tobor, $1,000,000 New Dollars; John Smallberries, loan backed by 400,000 shares of YoyoDyne Propulsion; and one Captain J. Kirk, who hates whales."

    2. Re:Its not that far fetched. by ObsessiveMathsFreak · · Score: 1

      He did not build the time machine to win at the stock market. He built the time machine to travel through time!

      --
      May the Maths Be with you!
    3. Re:Its not that far fetched. by Reverend528 · · Score: 5, Funny

      1. Profit!
      2. ???
      3. Invent Time Machine

    4. Re:Its not that far fetched. by Profane+MuthaFucka · · Score: 1

      A little time, a few donations, and this researcher can afford to travel.

      --
      Fascism trolls keeping me up every night. When I starts a preachin', he HITS ME WITH HIS REICH!
    5. Re:Its not that far fetched. by slideroll · · Score: 0

      Remember, no matter where you go, there you were.

    6. Re:Its not that far fetched. by bigdavex · · Score: 2, Insightful

      That was beautiful. I laughed out loud.

      --
      -Dave
    7. Re:Its not that far fetched. by Anonymous Coward · · Score: 0

      s/were/went/ ?

      -L

    8. Re:Its not that far fetched. by Anonymous Coward · · Score: 0

      1. Profit!
      2. ???
      3. Run with the money to a hidden beautiful island and enjoy (spend) it with all the time in the world ahead to Invent a Time Machine (or let others do it)

    9. Re:Its not that far fetched. by lahi · · Score: 1

      Agree completely. If there was a /. hall of fame that one sure deserved a place.

      -Lasse

    10. Re:Its not that far fetched. by sxtxixtxcxh · · Score: 0

      That's awesome... and the fact that someone else replied to this with essentially "lol" and got modded insightful is telling. *golf clap*

      I have started a new blog category just to archive the best comments I've run across, and this one alone kicks it off.

      --
      for a minute there, i lost myself...
  3. So? by grub · · Score: 5, Funny


    he wants to be able to use entangled pairs to send messages, not only through space, but also in time.

    Big deal, Slashdot has been bringing us news from the past for years!

    --
    Trolling is a art,
    1. Re:So? by Anonymous Coward · · Score: 0

      LOL

    2. Re:So? by XxtraLarGe · · Score: 4, Funny

      he wants to be able to use entangled pairs to send messages, not only through space, but also in time. Big deal, Slashdot has been bringing us news from the past for years! Did you know subscribers can see articles in the future?
      --
      Taking guns away from the 99% gives the 1% 100% of the power.
    3. Re:So? by evilviper · · Score: 2, Funny

      Did you know subscribers can see articles in the future?

      Oddly enough, most of the articles from the future are also from the past...
      --
      Slashdot gets worse every day... Pipedot: News for nerds, without the corporate slant
    4. Re:So? by jollyreaper · · Score: 1

      he wants to be able to use entangled pairs to send messages, not only through space, but also in time. Big deal, Slashdot has been bringing us news from the past for years! And this article right here is just the dupe of the original posted three months from now.
      --
      Kwisatz Haderach
      Sell the spice to CHOAM
      This Mahdi took Shaddam's Throne
    5. Re:So? by mikiN · · Score: 1

      1. Profit!!
      2. ??
      3. Realize that Slashdot articles have many dupes.
      4. Post article on Slashdot about sending information through time.

      --
      The Hacker's Guide To The Kernel: Don't panic()!
    6. Re:So? by Anonymous Coward · · Score: 0

      What is

      2. ??

      Well...create Slashdot of course! CmdrTaco beat us all to it and no-one will dispute he's won the jackpot with it.
      As to the premise of the article, well, QED...

    7. Re:So? by guruevi · · Score: 1

      Dark Helmet: What the hell am I looking at? When does this happen in the movie?
      Colonel Sandurz: You're looking at now, sir. Everything that happens now is happening now.
      Dark Helmet: What happened to then?
      Colonel Sandurz: We passed then.
      Dark Helmet: When?
      Colonel Sandurz: Just now. We're at now now.
      Dark Helmet: Go back to then.
      Colonel Sandurz: When?
      Dark Helmet: Now!
      Colonel Sandurz: Now?
      Dark Helmet: Now!
      Colonel Sandurz: I can't.
      Dark Helmet: Why?
      Colonel Sandurz: We missed it.
      Dark Helmet: When?
      Colonel Sandurz: Just now.
      Dark Helmet: When will then be now?
      Colonel Sandurz: Soon.

      --
      Custom electronics and digital signage for your business: www.evcircuits.com
  4. As The Doctor once said... by Anonymous Coward · · Score: 5, Funny

    People assume that time is a strict progression of cause to effect, but, actually, from a non-linear viewpoint, it's more like a big ball of wibbly-wobbly timey-wimey stuff.

    1. Re:As The Doctor once said... by jnaujok · · Score: 3, Funny

      That sentence kind of got away from you there...

      --
      Life, the Universe, and Everything... in my image.
    2. Re:As The Doctor once said... by Anonymous Coward · · Score: 0

      heh.. awesome. those statues were freaky.

    3. Re:As The Doctor once said... by Anonymous Coward · · Score: 0

      it got away from me, yeah.

    4. Re:As The Doctor once said... by Paulrothrock · · Score: 1

      All they need is a timey-wimey detector that goes "ding!" when there's stuff.

      Best. Episode. EVAR.

      (Chick was hot, too)

      --
      I'm in the hole of the broadband donut.
    5. Re:As The Doctor once said... by dshade69 · · Score: 1

      Not the best episode but a damn good one...but yea...one of the hottest chicks i've seen on the series so far.

    6. Re:As The Doctor once said... by Fred+Ferrigno · · Score: 1

      Ah, c'mon. Compared to the previous two-parter where the Doctor became human? C'mon! It was a decent episode, probably better than average, but not the best EVAR.

      Also, the chick was hot.

    7. Re:As The Doctor once said... by lurvdrum · · Score: 1

      Yep, for the first time in the "new" series this episode actually had the kids cowering behind the traditional sofa - something that was part & parcel of the Who experience back in the sixties but mostly went missing from the new series in favour of a lot of running and puffing and CGI monsters. Excellent episode. The sort of thing Torchwood could have been if it hadn't got so hung up on "adult" situations.

  5. First Post from 1972 by Timesprout · · Score: 4, Funny

    Wooo it works!!!

    --
    Do not try to read the dupe, thats impossible. Instead, only try to realize the truth
    What truth?
    There is no dupe
    1. Re:First Post from 1972 by Tablizer · · Score: 0, Offtopic

      Wooo it works!!!

      And first troll-mod too.

    2. Re:First Post from 1972 by Anonymous Coward · · Score: 0

      You will fail it!

    3. Re:First Post from 1972 by teslar · · Score: 4, Funny
      Timestamp from actual first post:

      Tuesday June 12, @06:00PM
      Your timestamp:

      Tuesday June 12, @06:01PM
      For all those who think about making fun of this gentleman for not actually having made first post, remember that the post has travelled for 25 years and has arrived within 1 minute of its designated arrival time. That's an error of approximately 7.6x10^(-8) times total time travelled... and that is better than what i can achieve at darts :)
    4. Re:First Post from 1972 by teslar · · Score: 2, Funny

      has travelled for 25 years
      Damn, I just realised it's not 97 anymore, goes to show the accuracy of my own time machine...make that 35 years and recalculate the error as required :) Will still be in the order of 10^(-8) though I expect
  6. I'm all for the scientific method... by DanQuixote · · Score: 3, Insightful


    But I also admire folks who can inspire others toward some dream...

    --
    "We think people rightly feel that once they buy something, it stays bought," --Suw Charman, Open Rights Grp
    1. Re:I'm all for the scientific method... by Chris+Burke · · Score: 5, Insightful

      The difference between a crackpot and a scientist with a dream is that the scientist still relies on the rigorous application of the scientific method even if their theory is way outside of mainstream. It sounds like this guy is taking the latter tack. He has experiments in mind, and is completely open to the idea that they may fail.

      You don't have to pick between dreaming and scientific rigor. The scientific method is how you turn your dreams into a reality -- if reality is ammenable to your dreams.

      --

      The enemies of Democracy are
    2. Re:I'm all for the scientific method... by drgonzo59 · · Score: 1

      Unfortunately $35k won't take him very far. He will probably need at least 10x that much.

    3. Re:I'm all for the scientific method... by WalksOnDirt · · Score: 4, Informative

      John Cramer has been writing science articles for the science fiction magazine Analog for some time. They are available online here: http://www.npl.washington.edu/AV

      --
      a,e,i,o,u and sometimes w and y (at be if of up cwm by)
    4. Re:I'm all for the scientific method... by Anonymous Coward · · Score: 0

      Somebody probably watched this discovery 'science' channel video.

      http://www.youtube.com/watch?v=X02WMNoHSm8

      It was right after the UFO's uncovered and just before bigfoot.

    5. Re:I'm all for the scientific method... by Anonymous Coward · · Score: 3, Informative

      If $35k buys him one experiment that disproves his theory, then he's saved 9x that much. If his experiment shows that his theory produces reproducible results, then he's that much closer to convincing people he's not a nut.

      The question is whether $35k is enough to fund one experiment.

    6. Re:I'm all for the scientific method... by dotspiral · · Score: 1

      The problem is that these sorts of activities are akin to investment scams, fleecing idealistic but perhaps more naive people.

    7. Re:I'm all for the scientific method... by Programmer_In_Traini · · Score: 1

      ive always told myself that all it takes to make a dream come true is one person that really believes in it and starts working toward its realization, then, sooner or later, that person would find a way.

      However, in this case, i have to admit that it does make me wonder about whether more like a fantasy rather than a dream. but then again, what do i know about space time continuum and all that star trek back to the future crap.

      --
      If you look like your passport photo, you're too ill to travel. - Will Kommen
    8. Re:I'm all for the scientific method... by ryanguill · · Score: 1

      so basically, you like science, but you also admire Marshall Applewhite and Bonnie Nettles because they inspired inspired people toward the dream of being taken away on a comet...

      http://en.wikipedia.org/wiki/Heaven's_Gate_(cult)

    9. Re:I'm all for the scientific method... by Joe+Snipe · · Score: 1

      35k can pay for fundraisers, or help grease the way into the offices of heavier investors. This guy is on the right track, especially if he negotiates full or partial ip rights.

      Don't think big; think "ponzi"

      --
      Sometimes, life itself is sarcasm...
    10. Re:I'm all for the scientific method... by orgelspieler · · Score: 1
      Would that be the Impossible Dream, Mr. Quixote?

      *starts humming Broadway tunes*

    11. Re:I'm all for the scientific method... by Anonymous Coward · · Score: 0

      all it takes to make a dream come true is one person that really believes in it and starts working toward its realization, then, sooner or later, that person would find a way.

      Though the "way" usually involves a lot of other people's money or labor.

      History is the best teacher

    12. Re:I'm all for the scientific method... by Johnny5000 · · Score: 1, Troll

      Unfortunately $35k won't take him very far. He will probably need at least 10x that much.

      How exactly would $350,000 help substantiate his loony idea better than $35,000?

      --
      The libertarian solution to the failures of capitalism is to apply more capitalism til the failures are fixed.
    13. Re:I'm all for the scientific method... by RickRussellTX · · Score: 1

      Call him what you will, but any scientist is taking a risk when they take money from private investors. There is always a potential for bias toward the investors' point of view. For example,

      http://en.wikipedia.org/wiki/John_Bockris

      The peer review process for grants puts an important layer of fact-checking on top of every grant, and puts needed philosophical distance between the goals of the granting organization and the grantee. This is particularly important for university faculty, whose careers are built on research integrity.

      Some may legitimately complain that the grants approval process has a stultifying effect on innovation, and it probably does. But it has a much greater effect on fraud & bad science, IMO.

    14. Re:I'm all for the scientific method... by magarity · · Score: 5, Insightful

      How exactly would $350,000 help substantiate his loony idea better than $35,000?
       
      The wealthier you are the more other people take you seriously.

    15. Re:I'm all for the scientific method... by gstoddart · · Score: 1

      You don't have to pick between dreaming and scientific rigor. The scientific method is how you turn your dreams into a reality -- if reality is ammenable to your dreams.

      Dude, you just anthropormophized all of reality.

      People do that to 'information' all of the time around here saying "information wants to be free" -- but, the sum total of existence and reality, that's ambitious. I commend you, sir, on the sheer scope. =)

      Cheers
      --
      Lost at C:>. Found at C.
    16. Re:I'm all for the scientific method... by FST777 · · Score: 1

      Put that way, the investors aren't stupid either. What if his experiments generate immensely useful spin-offs (like new ways to store huge amounts of data for long times, or ways to transport information almost instantaneously)? They will make profit that way.

      It's highly likely that his vision will fail. With enough funding, it's very likely that there will be spin-offs. It's not unlikely that those spin-offs will be profitable.

      --
      Free beer is never free as in speech. Free speech is always free as in beer.
    17. Re:I'm all for the scientific method... by SQLGuru · · Score: 1
      FTFA:

      Cramer has all the money he needs for this phase, but he hopes to see a second phase.


      Apparently, 35K is enough for the first experiment.

      Layne
    18. Re:I'm all for the scientific method... by Chris+Burke · · Score: 1

      Reality likes to be anthropomorphized.

      --

      The enemies of Democracy are
    19. Re:I'm all for the scientific method... by Anonymous Coward · · Score: 0

      For example: Tom Cruise.

    20. Re:I'm all for the scientific method... by Paperweight · · Score: 1

      One of my friends and I greatly enjoyed John G. Cramer's book Twistor, as well. The book was, coincidentally, about surprising results from the (if not U.S. government cancelled) Superconducting Super Collider... and some time travel thrown in to save Earth from an all-consuming organism that appeared from a wormhole from an SSC experiment.

    21. Re:I'm all for the scientific method... by finiteSet · · Score: 1

      The question is whether $35k is enough to fund one experiment.
      All he needs is a few hundred dollars. Not sure where he'll get the plutonium, though...
      --
      If we start buying CDs then the terrorists have already won.
    22. Re:I'm all for the scientific method... by Anonymous Coward · · Score: 0

      "The wealthier you are the more other people take you seriously."

      Umm...Yeah...Kinda like Paris Hilton, Right?

      More realistically speaking, people are less likely to disagree with you so as not to offend.
      Barring those who have made huge fortunes on their own, I have found (generally speaking) the more money a person has, the less intelligent and more detached from reality they become.

  7. ROI by Doc+Ruby · · Score: 3, Insightful

    If time travel can be produced, it's worth (asymptotically) nearly any amount of investmemnt to get it.

    --

    --
    make install -not war

    1. Re:ROI by timster · · Score: 5, Interesting

      Nah, it's not worth anything. If time travel is ever developed, the universe enters an unstable state. Stability isn't returned until a scenario occurs where time travel is never discovered in the first place.

      This process takes no time (obviously), so any discovery of time travel is immediately undone. Actually, this happens all the, er, time.

      --
      I have seen the future, and it is inconvenient.
    2. Re:ROI by squidfood · · Score: 2, Interesting
      If time travel can be produced, it's worth (asymptotically) nearly any amount of investmemnt to get it.


      It is extraordinarily sad to me that the "geeks" of this forum are considering this a financial investment rather than a scientific investment. I am a scientist, and I know that the logic of grants and funding agencies is a game that can be far removed from science, supportive of the status quo and the tenured. For $2-10K, if I had it lying around, I'd happily play "funding reviewer" in the hope of funding something small but with good potential.

      This "private investment" model is intriguing, it's much more accessible than the mammoth granting agencies, perhaps better for the public than funneling public money through the NSF. It creates direct communication between scientists and interested supporters. Especially as the article quotes seem to indicate the investors are intelligent - the pooling of a small amount of money for a credible scientific result is to be encouraged. Though I do recognize one must be careful, it can be a fine line sometimes between this credible (though bleeding edge and possibly wrong) research and snake oil.

      And small investments help: a year of a grad student can get a lot done. Well, with some grad students.

    3. Re:ROI by cowscows · · Score: 3, Insightful

      Not to mention that there are plenty of people out there for which $35,000 is really a drop in the bucket. Giving that money to this guy is most likely money wasted, but if that money was most likely just going to sit in the bank with a few other tens of millions of dollars until you die, then you haven't really lost anything worth worrying about anyways.

      If you've got more money than you know what to do with, why not take a couple long-shot bets?

      --

      One time I threw a brick at a duck.

    4. Re:ROI by jbarr · · Score: 1

      If time travel can be produced, it's worth (asymptotically) nearly any amount of investmemnt to get it.
      The glory and gain will still be short-lived as you'll still die just like the rest of us.
      --
      My mom always said, "Jim, you're 1 in a million." Given the current population, there are 7000 of me. God help us all!
    5. Re:ROI by bagsc · · Score: 1

      You're overlooking the economic proof that time travel can't exist:
      If it ever existed or will exist, then the inventor would have anything possible at any point in time. If there is any chance that this technology could be created once, then it could be stolen over the course of the history of the universe, or invented again, and again, effectively many, many times. Assuming the universe is a rival good (i.e. if I use if for my purposes, you can't), this makes the entire universe an area of competition at all points in time, and you'd be working for someone with a time machine time now. This means investments wouldn't appreciate over time, and the time value of your labor would go to zero. So there will never be time travel.

      There are a few fine points missing in the proof. This is left as an exercise for the reader.

      --
      http://www.accountkiller.com/removal-requested
    6. Re:ROI by Maximum+Prophet · · Score: 2, Interesting

      If time travel can be produced, it's worth (asymptotically) nearly any amount of investmemnt to get it.
      Unfortunately, no. There are already experiments that seem to show time travel, but the nature of the experiment is that it takes longer to get the results, than the time distance you can travel backwards. i.e. I can send a message back 10 microseconds, but I don't know about it until 20 microseconds. The information isn't available until after the experiement is finished, rendering it useless.

      These experiments become physics parlor tricks, like wavefronts moving greater than the speed of light, but they aren't useful.

      If you could build a system that sent a small amount of information backwards in time, even only milliseconds, you could use it to build a computer that could run an infinite loop in constant time. Problems like traveling salesman could be solved with perfect induction.
      --
      All ideas^H^H^H^H^Hprocesses in this post are Patent Pending. (as well as the process of patenting all postings)
    7. Re:ROI by mrpeebles · · Score: 1

      No. Technology from the future will allow us to live forever. How will we get this technology in the future you ask? Simple! We will already have had it.

    8. Re:ROI by Doc+Ruby · · Score: 1

      It's disappointing to me that a scientist would see "financial" vs "scientific" investment as mutually exclusive. Especially when offering private service of "funding reviewer" for pay. Would you publish your results?

      I don't understand how you call the financial investment (presumambly you mean "judged by financial returns") "sad", then go on to describe how good it could be, particularly compared to "mammoth granting agencies".

      The distinction between "scientific" and "financial" is either nonexistent, or largely irrelevant, except in determining in which terms the funding is decided to grant, and in which terms the return is evaluated for success. The real distinction is whether funding is private or public, and whether the results are kept private or published.

      --

      --
      make install -not war

    9. Re:ROI by Joe+Snipe · · Score: 1

      It is extraordinarily sad to me that the "geeks" of this forum are considering this a financial investment rather than a scientific investment.

      Because thats all it is good for. If this technology got off the ground, way out future geeks would send back all the knowledge of the universe (in pill form I assume), and then we would lose the joy of discovery, but would still be hungry and cold. lame.

      --
      Sometimes, life itself is sarcasm...
    10. Re:ROI by Doc+Ruby · · Score: 2, Interesting

      Except that "some time travel" != "unlimited time travel". What if time travel is possible, but only for info, and each bit transmitted requires just less than the total energy of the universe for some smallest time backwards? What if that bit can represent only whether or not the bit itself was transmitted? What if there's some other limit, and time travel falls somewhere in between? What if there's complex, perhaps cyclic, dependencies among several limits?

      Even those possibilities are possible to consider only after we've started to understand information dynamics, which itself is pretty recent. What if there are other kinds of limits, or other ways to get around limits, that more info engineering experience reveals? What if there are several cycles of paradigm change like that before we understand enough to even investigate time travel directly?

      And what about just proving in detail how the universe prevents time travel? The current model, based mostly on Einstein's Relativity, allows for time travel in some circumstances (eg. some rotating cylindrical black holes). Why isn't it easier? Does it already happen in nature? The "intermediate" results, or just disproof, would restructure a great deal of our model of the universe.

      All of which has economic benefit, likely greater than the cost.

      --

      --
      make install -not war

    11. Re:ROI by Doc+Ruby · · Score: 1

      Those experiments only prove that time travel is less impossible than it was once believed to be, but not possible enough to do it the way we want. Also, Lasers were just a parlor trick, like vision persistance was before TV. Mastering those physical tricks can have a great deal of value. Maybe some of what we want to get from time travel doesn't require actual time travel, but just the reliable appearance of it.

      --

      --
      make install -not war

    12. Re:ROI by squidfood · · Score: 1
      The distinction between "scientific" and "financial" is either nonexistent, or largely irrelevant, except in determining in which terms the funding is decided to grant, and in which terms the return is evaluated for success. The real distinction is whether funding is private or public, and whether the results are kept private or published.


      The "standard" model is that private investors see financial returns as success, while public investors see scientific returns (e.g. publications) as success. This is of course not black/white. It's innovative to see small scale private funding where the investors see scientific returns as the primary success metric. Call it micro-science, a bit like micro-credit, for a small investment a private individual can "pay" to play a role and review and fund science (not the other way around, as you mis-read me).

      The earlier posts in this thread were along the black/white standard model -- "if there's no massive financial return on a private investment, you're being suckered!" That's a bit disappointing.

    13. Re:ROI by Doc+Ruby · · Score: 1

      Moderation 0
          50% Insightful
          50% Overrated

      Some time travelers want to keep time travel to themselves, others want us to think about doing it. They destructively interfere to zero, but there's really double the action going on around the issue. If it's so important, it's probably worth trying.

      --

      --
      make install -not war

    14. Re:ROI by MoogMan · · Score: 1

      Your logic may be sound, but only based on your current perception of time and the universe. Who's to say that this perception is correct?

    15. Re:ROI by Chosen+Reject · · Score: 4, Funny

      So the technology was invented in the future, but we have it now. But since we have it, the people in the future won't bother to discover it because they already have it, which means it wasn't ever discovered, thus in the past we didn't have it to grant to the people in the future, which means that now they had the motivation to discover it, but since they sent it back to us, they had it in the past, and just took that knowledge for granted and didn't have to discover it, so the future never discovered it, so they didn't send it back to us, so we didn't have it, and thus they didn't have it to take for granted, so they discovered it, and then sent it back to us, and so on and so forth.

      --
      Stop Global Warming!
      Just say no to irreversible processes!
    16. Re:ROI by Doc+Ruby · · Score: 1

      The only problem I have with the broad model of funding science is when public money is spent to produce info that is kept private. Either kept secret entirely, or excluded from exploitation by any but one (or a group of) private individuals/orgs. Like governments funding schools R&D that produces patents licensed only from the schools to private licensees. This process is not bad only for science, but for all publicly funded research.

      Even though private investment can, always has, and always will produce private science, the public needs lots of public science. And the private science is not nearly as reliable, therefore valuable, as public science. Because the widest possible review produces the most accurate science. Private science might have competitive value, but it's vulnerable to self-selected blindspots that increase its risk - and thereby, the overall value of private science.

      Another note on financial return expectations: in an investment market like the past 5 years, any return at all, even a few percent a year, is worth investing, depending on its risk, and the other costs of selecting, managing and cashing out an investment. "Massive" ROI is not available to just anyone, and just avoiding losses (like inflation vs noninterest savings) can be a worthwhile investment, even if just for diversification.

      --

      --
      make install -not war

    17. Re:ROI by Anonymous Coward · · Score: 0

      Voluntary or coercive? Please elaborate.

      Are you speaking of private (voluntary) investment -- a product of free choice -- or are you speaking of government (coercive) investment? Or do you not care to differentiate?

    18. Re:ROI by HTH+NE1 · · Score: 2, Insightful

      Not necessarily. It could enter into a self-sustaining stable harmonic state where it is alternately discovered and not discovered, or create a pocket self-contained universe where dinosaurs and lizard-men live and time travel is regularly performed inside special pylons using grids of glowing colored rocks.

      --
      Oh, say does that Star-Spangled Banner entwine / The myrtle of Venus with Bacchus's vine?
    19. Re:ROI by ZorinLynx · · Score: 3, Interesting

      This brings up an interesting concept. Say you invent a machine to send a message back in time 20 seconds.

      So in testing the machine, you receive the message, and then in 20 seconds send it. It works! Great, but...

      On the second test, you start to wonder, "What would happen if I was going to send the message, but then change my mind when I receive it?"

      So you receive the message, then decide not to send it. Interesting paradox, huh?

      Either that, or the machine will always predict with 100% accuracy whether or not you'll push the button to send the message. So if you intend to not push it once you get the message, you'll never get the message. So there will be no way to "trick" the message into coming in.

      It's a bizarre concept. Thinking about it brings up interesting thoughts like whether or not we really have free will. :)

    20. Re:ROI by metacell · · Score: 1

      No, a changing timeline cannot enter a cyclic state where time travel is alternatively discovered and not discovered. As soon as the timeline enters the state where time travel is not discovered, it will stop changing. A changing timeline can, however, go into a stable cycle if each travel back in time changes the timeline to one of its previous states. A special case of this is the static timeline, that is, a timeline where every travel back in time ends up recreating the timeline exactly like it was when the time traveller departed.

    21. Re:ROI by Doc+Ruby · · Score: 1

      It doesn't matter where the money comes from, in terms of the ROI.

      But apart from the economics, people who call taxation funded government "coercive" don't think the costs of taxation to be worth any return, no matter how high.

      --

      --
      make install -not war

    22. Re:ROI by HTH+NE1 · · Score: 1

      No, a changing timeline cannot enter a cyclic state where time travel is alternatively discovered and not discovered.

      Sure it can. The reflex point is necessity. You need to travel back in time, so you invent a time machine and do it. Then you've removed your need to travel back in time, so you don't invent a time machine, and you don't do it. The need returns, so invent it again. Thus the timeline oscillates between time travel existing and not existing. Constructed properly it can be self-sustaining.

      Unless you subscribe to many-worlds. Then a time machine is also a cloning machine. If you can plot the alternate timelines, you can engage in interdimensional trade where you have infinite supply of identical goods. In such a situation it is essential that you maintain artificial scarcity to maintain demand (see diamonds). (It helps to keep prices up by selling to the last customer first and the first customer last: every new sale is at bleeding-edge prices.)

      --
      Oh, say does that Star-Spangled Banner entwine / The myrtle of Venus with Bacchus's vine?
    23. Re:ROI by squidfood · · Score: 1
      Even though private investment can, always has, and always will produce private science, the public needs lots of public science. And the private science is not nearly as reliable, therefore valuable, as public science.


      As 90% of the public funds I work with are directly from the government, and as most of my results are (by law) public domain, I agree with you. However, the broad "funding model" does leave much to be desired as well, especially in terms of being afraid (as any large committee are afraid) of the cutting edge and non-mainstream work. Perhaps, given the publicity of this researcher, I took it for granted that results from this small scale private funding would be "published" (while allowing for patents, etc.). If it were my funds, I'd insist on published/ publically available results before investing the funds. But again, such an insistence would go against the standard private investor's model of profits/ROI first.

      Done right, this kind of thing could be like the X-prize for the non super-rich, something for the rest of us to enjoy investing in as a pleasure.

    24. Re:ROI by NaugaHunter · · Score: 2, Funny

      Finally, an explanation of deja-vu that makes sense - the perception of parabolic ripples of collapsing flux capacitors killing their inventors before they are made! It naturally follows that as the ripples propogating through the ether cause my arms and legs to sleep when I'm awake, not to mention that every time I remember something different from my wife it's just the Uncertainty Principle asserting itself retroactively! Though it's suspicious that it's always in her favor...

      Who knew Chicago had it right all these years; I really do no longer know what time it is.

      --
      R: That voice. Where have I heard that voice before? B: In about 365 other episodes. But I don't know who it is either.
    25. Re:ROI by Doc+Ruby · · Score: 1

      I think there's a lot of opportunity for a "middle layer": people who fundraise from private investors to produce research. If that middle layer were run by government agencies, there would still be a compelling argument for publishing everything into the public domain (no patents or other private intellectual property). Without the public (or its representatives) in the critical path of producing the research, the only argument for keeping the products public is that which keeps privately funded museums public: a sense of civic responsibility, perhaps boosted by tax deductions. But I don't expect our public museum culture (at least of unique physical artifacts) to last in such substance much longer than another generation or two. The momentum is going in the other direction: all useful info becoming private, with the public domain swamped with a cacophony of unreliable, mostly calculatedly biased propaganda/advertisements.

      But the Internet accommodates all kinds of complex social networks that produce and can refine information. While the public domain itself is such a booster of info, and is a fairly durable idea, despite privatizing pressures. Maybe people will aggregate both demand for info and supply of money that both serves and harnesses the public. Slashdot, after all, captures quite a lot of valuable laborer's time, and is public without being totally worthless.

      --

      --
      make install -not war

    26. Re:ROI by Doc+Ruby · · Score: 1

      For one, you don't know enough about time travel's effects to say it would put the universe into an unstable state, or how long the "process" takes (time

      For another, you don't know enough about the universe to say it's not already unstable - or that time travel isn't currently happening somewhere/somewhen in it.

      --

      --
      make install -not war

    27. Re:ROI by Chris+Burke · · Score: 1

      Look, you're going to have to learn to get used to this kind of thing if you're going to adapt to the new world of time travel. Those without time-travel-causality skills will be left behind much like a person with no computer skills today basically has to get a job as a doorstop.

      The only thing that has to happen for the present to receive the time machine technology is for a time machine to be sent back from the future. So the future invents a time machine, sends it back in time to the present, where it is reverse engineered and manufactured. The future no longer has an incentive to invent the time machine because it has already been invented, but that's okay, they just send one of the machines off the assembly line back into the past.

      Once the timeline sorts itself out, it will essentially appear as though time travel technology spontaneously appeared and was never "discovered" at all, only reverse-engineered from an existing machine. This is perfectly normal and nothing to be alarmed about.

      You'd know all this already if you had studied the action-documentary Terminator 2: Judgement Day, where Cyberdyne Systems invents the Terminator in the present by studying bits of a Terminator from the future. This documentary was sent from the future, by the way, to prepare us for when they send the actual time machine.

      --

      The enemies of Democracy are
    28. Re:ROI by Bonobo_Unknown · · Score: 1

      But if you trace back your time line you did press the button.

      Starting where you sent the message, the time line of the message is

      message sent ---> message received, because to the message it's arrow of time is still going forwards. In order to decide not to receive the message you would need to do that before you sent it, in which case you would never have received it, so you would not know that you could have received it.

      Make sense?

      --
      We don't believe in radical loony monotheistic religions from the middle east -- we're Christians.
    29. Re:ROI by Kirth+Gersen · · Score: 1

      If time travel is ever developed, the universe enters an unstable state. Stability isn't returned until a scenario occurs where time travel is never discovered in the first place.
      This process takes no time (obviously), so any discovery of time travel is immediately undone. Actually, this happens all the, er, time.

      You are correct that this happens all the time. However, what that means is that the probability density of universes where time travel exists is always non-zero, even though their timelines are pinched out. In other words, whatever universe you may be in still may be one with time travel, but watch out for the pinch out.
    30. Re:ROI by Anonymous Coward · · Score: 0

      No. Technology from the future will allow us to live forever. How will we get this technology in the future you ask? Simple! We will already have had it.
      Actually, we already have it! It's so simple:

      Accept that you are a sinner.
      Ask Jesus Christ to come into your life to cleanse you of your sins through His atoning blood.
      Enjoy an eternity with Christ in Heaven.

      Resistance is not futile, but it is damning.
    31. Re:ROI by Pollardito · · Score: 1

      i'm more interested in how these investors expect to profit from this. the experiment that he's doing now is only to prove or disprove a fundamental fact about the universe in order to attract funding for future experiments. it'd be followup experiments that possibly result in a workable product that would be sellable, so i suppose these initial investors are securing a place in that followup funding? it'd be great if they're investing in science that they think is good science and needs to be done, but from all the interviews in the article it seems that they're clearly envisioning the possibility to make a ton of money off this investment. in order for that to happen doesn't that mean that the results of this experiment will be locked up in some sort of patent system, and if that's the case: how do they intend to patent or keep secret a basic fact of how our universe works, and why do they get tax deductions for investing in a discovery whose results are encumbered?

    32. Re:ROI by metacell · · Score: 1

      Perhaps, but plese elaborate. For instance, let's say John Smith in timeline A travels back in time to warn himself of an accident. He succeeds, and the timeline changes to B, where the accident doesn't occur. Then the timeline B version of Smith doesn't see a need to invent a time machine, and never travels back in time to warn himself. How would the need return? Would timeline B automatically revert back to A, witout a time trip to trigger it?

  8. Come on... by vurg · · Score: 4, Funny

    If I ever start thinking about building a time machine, I would make a promise to myself beforehand that my first plan of action is to send a message back in time to right now telling me that it works. I'm still waiting for that message.

    1. Re:Come on... by rwhamann · · Score: 1

      Your future self probably suffered some memory loss when you fell off the toilet, so you forget to send the message.

      --
      seg fault
    2. Re:Come on... by nonsequitor · · Score: 1

      Maybe you just need to look harder for the message. Go watch "The Number 23" and tell me if you haven't been trying to contact yourself from the future.

    3. Re:Come on... by Rob+T+Firefly · · Score: 1

      In one theoretical model of time travel, you can just go on waiting, because you haven't sent it yet so it won't have happened. If you actually get to that point in the future and actually get back here to pass yourself a note, then you'll suddenly "have gotten it" back now, and any resulting headaches, paradoxes, failed history reports, and dead grandfathers will be your own problem.

    4. Re:Come on... by Chris+Burke · · Score: 1

      Your future self has clearly decided that it is more important to game the stock market, use the proceeds to buy weaponry, and then time travel to, say, ancient Mexico where you will have become an Aztec King.

      Or maybe I'm just projecting what I'd do if I invented a time machine.

      --

      The enemies of Democracy are
  9. If this works... by Organic+Brain+Damage · · Score: 0, Redundant

    ...then it's all over for Powerball. [I hate the minimum time between Reply/Submit]

    1. Re:If this works... by Joe+Snipe · · Score: 1

      [I hate the minimum time between Reply/Submit]

      If this works you won't have to worry about that anymore

      --
      Sometimes, life itself is sarcasm...
  10. for chists sake by brunascle · · Score: 4, Informative

    how many times must it be explained, you cannot send information FTL using quantum entanglement. more specifically, you cannot send information using quantum entanglement. you can only use it together with a classical communication channel.

    you'd think these people wouldve already known that.

    1. Re:for chists sake by tylersoze · · Score: 2, Informative

      Uhh this isn't FTL, the information is sent through advanced waves at exactly the speed of light.

    2. Re:for chists sake by Anonymous Coward · · Score: 0

      How many times must people on slashdot be told to the RTFA? You'd think these people would've already known that.

    3. Re:for chists sake by brunascle · · Score: 1

      true. what i said still stands though, just take out the words FTL. quantum entanglement is often described (including in the article) in ways that make people think there is information transfer going on, which leads people to look for ways to harness it. and it always fails because they misunderstood what was going on in the first place.

    4. Re:for chists sake by Kabuthunk · · Score: 1

      Any chance of tossing us a link explaining why? So far as your post, the researcher could reply to you saying "can too", and you both would have supplied about the same amount of proof :P

      --
      Planet Zebeth - Metroid with a twist
    5. Re:for chists sake by CaptainPatent · · Score: 4, Funny

      You're right... he should finish the machine, then go back and tell himself to never start it!

      --
      Well, back to rejecting software patent applications.
    6. Re:for chists sake by brunascle · · Score: 1

      mainly because there is no information transfer going on at all in quantum entanglement (at least, there isnt in the interpretation i subscribe to, and i'm not sure if there are any interpretations that do involve information transfer). if there were information transfer, it would violate special relativity.

    7. Re:for chists sake by wes33 · · Score: 2, Insightful

      don't need a link: in QFT it is true that space like separated operators commute - so no communication; in short, you can't make what you want happen at the other end of the "channel" even though there is a correlation between what is happening at both ends. OTH, so far as I know, this condition on the operators is just "written in" to the the theory so I think it's definitely worth testing

    8. Re:for chists sake by tylersoze · · Score: 3, Interesting

      I agree with you that most descriptions of entanglement are BS, especially in the mainstream media, but as far as Cramer's transactional interpretation goes it's just an alternative interpretation of QM. The "transaction" that occurs in this interpretation when the wave function finally collapses happens atemporally through the advanced and retarded offer waves. There's no classical information transfer. As I understand it, initially Cramer was only using this alternative interpretation as a teaching tool. Apparently now he's trying to find experimental evidence in cases where it would differ from other interpretations.

      Yeah the problem with FTL is that it connects events with a space-like interval which will have different temporal ordering depending on what reference frame you're in. In the tranasctional interpretation quantum information is transmitted at exactly the speed of light (light-like separation, 0 proper time) symmetrically in time. I loved this symmetric time idea when I first read about in Feynman's Lectures on Physics (where it was applied to his absorber theory to explain radiative reaction in EM).

    9. Re:for chists sake by Paperweight · · Score: 1

      After understanding this quantum erasure experiment, it seems that if path p (in this experiment) was lengthened enough you can tell, by looking at the double slit results of path s, if the polarizer is in place on path p before the p photon even reaches the polarizer. What if path p was lengthened to a distant location? Could someone there apply or remove the polarizer to path p letting you, by looking at the nearby double slit interference/non-interference results of path s, receive the signal of whether the polarizer is on path p or not before the p photon reaches the distant polarizer? If so, you have FTL communication in one direction.

    10. Re:for chists sake by ortholattice · · Score: 1
      You are right that standard QM prohibits FTL. However, Cramer is looking for a small nonlinearity - possibly at high energies - that standard QM doesn't account for and may provide a superluminal "loophole". From his article, Quantum Nonlocality and the Possibility of Superluminal Effects:

      This prohibition against superluminal communication, as stated above, is a part of standard quantum mechanics. However, this prohibition is broken if quantum mechanics is allowed to be slightly "non-linear", a technical term meaning that when quantum waves are superimposed they may generate a small cross-term not present in the standard formalism. Steven Weinberg, Nobel laureate for his theoretical work in unifying the electromagnetic and weak interactions, investigated a theory which introduces small non-linear corrections to standard quantum mechanics [13]. The onset of non-linear behavior is seen in other areas of physics, e.g., laser light in certain media, and, he suggested, might also be present but unnoticed in quantum mechanics. Weinberg's non-linear QM subtly alters certain properties of the standard theory, producing new physical effects that can be detected through precise measurements.
    11. Re:for chists sake by Anonymous Coward · · Score: 0

      Let me try to explain. Say you have two people on different ends of a quantum channel, Alice and Bob. They both have polarizers which are aligned, and receive entangled photons whose spins must be opposed, since they are generated by the decay of a spinless particle. This is the simplest example of a quantum channel I can think of.

      Photons are transmitted along both channels in some pre-agreed time interval. Alice reads out a series of numbers based on whether her photon went through the polarizer or not. She reads out 0, 1, 1, 1, 0, for example.

      Bob, with his identically aligned polarizer, reads out the opposite set: 1, 0, 0, 0, 1. Their strings are precisely correlated as long as their polarizers are aligned.

      However, neither Alice nor Bob can control the series of numbers he or she receives. The string is effectively random. The two strings are correlated, but they are precisely random. Depending on the orientation of things, the probability of Alice seeing a 1 is some number, and Bob sees a 0 whenever Alice sees a 1.

      It seems like this is FTL communication, but since the string is entirely random, no information can be transmitted. The fact that the strings are correlated doesn't allow us to transmit information. On the other hand, we can use this correlation to determine whether someone is eavesdropping. If Charles puts a polarizer before Bob's, the correlation between Alice's and Bob's strings will be compromised. There is a lot about quantum encryption I don't know... here are a few sources:

      Michael Nielsen and Isaac Chuang: Quantum Computing and Quantum Information (book)
      Nicolas Gisin, Gregoire Ribordy, Wolfgang Tittel, Hugo Zbinden. Quantum cryptography. Rev. Mod. Phys. Volume 74, page 145 (2002). A review article on quantum cryptography.

      Sorry these aren't web links... most of this stuff I learned while working in a quantum computing/trapped ion lab from 2002 to 2006, so scholarly articles are really all I know. Most of this stuff isn't well-discussed outside of that medium.

      Cheers.

    12. Re:for chists sake by Anonymous Coward · · Score: 0

      And Einstein himself said that the universe cannot allow black holes to form.
      This is all based on our incomplete understanding of the laws of the universe

    13. Re:for chists sake by master_p · · Score: 1

      Furthermore, sending information faster than light violates causality and creates time paradoxes. For example, it would be possible for Alice to inform Bob about an event concerning Bob, before the event was observed by Bob, thus giving Bob a chance to avoid the event.

  11. I am already Half way there. by jellomizer · · Score: 5, Funny
    I can send messages to the future but I am having sending messages back.

    #/bin/sh
     
    #send a message 5 minutes in the future
    sleep 300
    echo "Hello from the Past"
    But this doesn't seem to work yet

    #/bin/sh
    sleep -300
    echo "Hello from the Future"
    --
    If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    1. Re:I am already Half way there. by jellomizer · · Score: 1

      Um yes I know I even did a preview but I forgot to start my scrips with #! my bad.

      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    2. Re:I am already Half way there. by kat_skan · · Score: 1

      Actually, it only seems like it isn't working because the timelines are diverging. Keep trying, eventually you will randomly be on the one where you receive your message!

    3. Re:I am already Half way there. by Anonymous Coward · · Score: 2, Funny
      Yeah, but it works in LOLCODE:

      HAI
      BRB -300
      VISIBLE "HAI FROM FEWCHUR LOL"
      KTHXBYE
    4. Re:I am already Half way there. by HappySmileMan · · Score: 0

      If this doesn't get modded as funny instead of informative I've given up all hope on humanity

    5. Re:I am already Half way there. by jalet · · Score: 1

      Just try this one instead :

      echo "Hello from the past" | (sleep 300 && /bin/cat)

      --
      Votez ecolo : Chiez dans l'urne !
    6. Re:I am already Half way there. by Panaflex · · Score: 4, Funny

      The reason it doesn't appear to work is the output happened before you even ran it, unless you didn't run it, See?? .... Look in your shell history silly man ...

      >:-*-D

      --
      I said no... but I missed and it came out yes.
    7. Re:I am already Half way there. by D-Cypell · · Score: 4, Funny

      Actually my grandfather did develop a negative sleep function but I got so pissed off with my great grandchildren pestering me for an early inheiritance I went back and shot the bastard.

    8. Re:I am already Half way there. by MenTaLguY · · Score: 1

      Heh. I wrote a Ruby Quiz problem on just that a while back.

      Sadly, nobody submitted a solution involving time travel. :(

      --

      DNA just wants to be free...
    9. Re:I am already Half way there. by Anonymous Coward · · Score: 1, Funny

      8/24/2209 1:34am I just got your responce to your script ... "Hello from the Future"

      Dude you forgot 2s complement.

    10. Re:I am already Half way there. by Opportunist · · Score: 2, Funny

      Oh, it does work. In C it does. You just have to wait a looooooooooooooong time (and ignore the compiler warning that claims you're trying to use signed where unsigned would make more sense).

      Ok, it doesn't work as intended, but it compiles, so hell, ship it!

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
    11. Re:I am already Half way there. by Bugs42 · · Score: 1

      Ok, it doesn't work as intended, but it compiles, so hell, ship it! Ah, I see you work for Microsoft.
      --
      Programmer: an ingenious device that converts caffeine into code.
    12. Re:I am already Half way there. by Opportunist · · Score: 1

      What ... you..., you wanna be the first person on my foe list? :)

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
    13. Re:I am already Half way there. by Al+Al+Cool+J · · Score: 1

      Well of course *that* won't work. The -300 is interpreted as a command line option! It should be:

      sleep -- -300

    14. Re:I am already Half way there. by zCyl · · Score: 3, Funny

      The reason it doesn't appear to work is the output happened before you even ran it, unless you didn't run it, See?? .... Look in your shell history silly man ...
      .bash_future?
    15. Re:I am already Half way there. by spitzak · · Score: 1

      You didn't think it worked because the output was off the top of your screen, silly. Just scroll back to find it.

  12. Themselves by Tablizer · · Score: 1

    Have them fund themselves. They can go back to the 60's and invest in Intel.

  13. Not news by UbuntuDupe · · Score: 1, Troll

    The story is really just,

    "Another investor rooked into making a stupid investment through investment pitch X."

    Individuals invest in stupid things all the time. Like workers who just read Slashdot all day. ;-)

    1. Re:Not news by DerWulf · · Score: 1

      Yeah, it's stupid unless it brings a shitload of money. Of couse then nobody says 'Well you might swim in dollars but you still are freaking dumb for not realizing that this idea had only a one in a million chance to work'.

      --

      ___
      No power in the 'verse can stop me
  14. Request for Funds by Nom+du+Keyboard · · Score: 0, Redundant
    Hello,

    My project consists of sending messages back in time. Although this is proving very expensive to accomplish at this moment, I'll pay you off as soon as I send back the first winning set of Powerball numbers from the future. Please send money to me now. Because of past banking "misunderstandings", cheques are best made out to Cash. Thank you!

    Sincerely,
    R. U. Stupid

    --
    "It's the height of ridiculousness to say for those 9 lines you get hundreds of millions."
  15. Does it mention *which* direction? by AZScotsman · · Score: 1

    I mean, you can't count Mail Server Lag as sending messages into the future.... Right?

    1. Re:Does it mention *which* direction? by Opportunist · · Score: 1

      And given different timezones, you can even use mailservers to send message back in time! Try it! Get a friend in Tokyo to send you a message to you (in Los Angeles) and behold your message from tomorrow!

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  16. List of investors? by MECC · · Score: 3, Insightful

    I wonder if there's a way to get the names of the people who gave him money, and their contact info.

    --
    "We are all geniuses when we dream"
    - E.M. Cioran
    1. Re:List of investors? by grub · · Score: 1


      I wonder if there's a way to get the names of the people who gave him money, and their contact info.

      DEAR SIR,
      This letter may come as a surprise as we have never met. A mutual associate of ours, DR. JOHN CRAMER, has recently received $35,000 (Thirty Five Thousand) dollars for investment in his time machine....

      --
      Trolling is a art,
    2. Re:List of investors? by jalefkowit · · Score: 1

      That's easy. Just go forward in time a few years and find them in the bankruptcy notices.

    3. Re:List of investors? by jellomizer · · Score: 1

      Bill Gates... Hmmmm....

      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    4. Re:List of investors? by MoogMan · · Score: 1

      FTFA:

      Mitch Rudman, a music industry executive in Las Vegas - $20,000
      Denny Gmur, a scientist who works for a biotechnology firm in Bothell - $2,000
      John Crow, a businessman who splits his time between his gas-and-oil business in Shreveport and a home in Port Angeles - $3,000
      Walter Kistler, a retired physicist and rocket scientist who started Redmond-based Kistler Aerospace - $5,000.
      Total: $35,000

      That leaves $5,000 (so far) donated from unnamed parties.

    5. Re:List of investors? by InterestingX · · Score: 1

      If one's the Governor of California, I'll be in hiding.

  17. Entangled pairs? by EveryNickIsTaken · · Score: 1

    I thought you said NOT to cross the streams!

  18. I can prove that it won't work by 14erCleaner · · Score: 3, Interesting
    If he could send messages back in time, he could just send his impoverished past self some winning Lotto numbers, thereby funding the project far more than $35K.

    Of course, the past impoverished researcher would have to build a receiver first, requiring funds up front. Maybe that's what he's doing now. Keep an eye on how this guy's "luck" goes in the, um, future.

    --
    Have you read my blog lately?
    1. Re:I can prove that it won't work by Fry-kun · · Score: 1

      Actually, using this method you can only send messages as far back as you created the apparatus for reading those messages - and this project is apparently about creating it.
      Still pretty sure it won't work, though ;)

      --
      Did you know that "FTW" ("for the win") is a direct translation of "Sieg Heil"?
    2. Re:I can prove that it won't work by chris_mahan · · Score: 1

      July 1 2007 Man claims to have workable idea for machine to pass information back in time. All deride him as a fool.

      July 7, 2007, same man wins $130,000,000 in multistate lottery. Critics attribute it to fantastic luck.

      July 14, 2007, same man wins $188,000,000 in multistate lottery. US Military Intelligence (I know, contradiction of terms) starts looking for the man, but he's nowhere to be found. Apparently someone tipped him off...

      Dang, that would make some headline.

      --

      "Piter, too, is dead."

    3. Re:I can prove that it won't work by Fastolfe · · Score: 1

      Is it illegal to use time travel to win yourself the lottery?

    4. Re:I can prove that it won't work by Bill+Wong · · Score: 1

      Actually, that's been done before. Well, at least the headline, sorta. See Andrew Carlssin (wikipedia) and snopes

    5. Re:I can prove that it won't work by 14erCleaner · · Score: 1

      Andrew Carlssin claimed to be a time traveller from the year 2256, but (according to the Star Trek timeline) James T. Kirk didn't take command of the Enterprise until 2264, so he must be lying.

      --
      Have you read my blog lately?
    6. Re:I can prove that it won't work by That's+Unpossible! · · Score: 1

      What if the time machine can only go forward in time?

      --
      Ironically, the word ironically is often used incorrectly.
  19. Causality anyone? by nweaver · · Score: 0, Troll

    If relativity is correct (and even possibly if it isn't), backwards-in-time communication really REALLY F@#)(*s up causality. Heck, Faster Than Light (FTL) communication at all F@#)(*s up causality.

    The EPR paradox, in particular, can't actually communicate information, as you can't actually tell which of the two sides measured it first (or at all), preventing FTL communication and saving causality. (Of course, simultinaity doesn't make sense either, thanks to relativity, but causality does).

    This guy sounds like a good snake-oil salesman.

    --
    Test your net with Netalyzr
    1. Re:Causality anyone? by DamnStupidElf · · Score: 4, Interesting

      If relativity is correct (and even possibly if it isn't), backwards-in-time communication really REALLY F@#)(*s up causality. Heck, Faster Than Light (FTL) communication at all F@#)(*s up causality.

      Intra-universe causality, at least. If parallel universes exist (and mathematically it makes a lot more sense if they do), then causality is a moot point. When something travels back in time, it only appears in a parallel universe with the same history up to the point in the past at which it arrives, after which it is fundamentally different. This doesn't necessarily even require a violation of the laws of physics, because there is always some finite (but infinitesimal) probability of virtual particles assembling themselves into an object from a possible future or the past. If there are parallel universes, then there are almost certainly an infinite number of them, one for every possibility, and therefore some universes exist in which time travel happens as essentially an accident of random physics, but to the observers within the universe it looks just like time travel but without causality violations.

    2. Re:Causality anyone? by Doctor+Crumb · · Score: 1

      If there are parallel universes, then there are almost certainly an infinite number


      No, just the two.
    3. Re:Causality anyone? by Anonymous Coward · · Score: 0

      Faster Than Light (FTL) communication at all F@#)(*s up causality.


      You mean like gravity? I suspect that gravity "information" is faster than light, but it has yet to be experimentally proven or disproved. Personally I think that gravity being faster than light is the reason that SETI by radio astronomy is doomed to fail.

      One experiment that may help answer this: Gravity Probe B. Though the experiment is critically flawed in my view, no gyroscope can be made that perfectly (especially with the need to survive liftoff).

      WOW, I just looked at the site for the first time in a while and they have just announced that "GP-B SUCCEEDED IN COLLECTING THE DATA TO TEST EINSTEIN'S PREDICTIONS ABOUT GRAVITY". I shall have to take a very careful look at the results. This appears to support my view that gravity is indeed faster than light. I think this is worth its own submission.

      I'm off to examine the results.
    4. Re:Causality anyone? by wytcld · · Score: 1

      If parallel universes exist (and mathematically it makes a lot more sense if they do)

      It only makes more "sense" in the sense that this is a cheap way of solving the problem of why this particular universe exists, and why we have free will in it.

      If there are parallel universes, then there are almost certainly an infinite number of them, one for every possibility

      Then for each possibility that I choose among, I choose absolutely every single one of them. And the universe forks at every single choice-point - at least all the considered ones (probably even the unconsidered ones). Okay, positing that, then what the hell is all this effort of choosing about? And why do we hold people responsible for their choices, when at the same time they almost infinitely choose something(s) else? And wtf is the biological advantage of conscious choosing, such that creatures like us would embody it evolutionarily speaking?

      The convenience of mathematicians be damned. It hasn't turned out to be an Euclidian universe, even thought that would have been much more convenient to mathematicians. Why should it now turn out to be an infinitely parallel, branching sort of multiverse? Euclid works really well up to a point. But it's false, and the world does not bow to it. Math has moved beyond Euclid. But by how much, on the scale of how far math still has to go? It's in its infancy. The universe has no obligation at this point to be convenient for those who merely grasp today's best mathematical concepts. Not at all.

      --
      "with their freedom lost all virtue lose" - Milton
    5. Re:Causality anyone? by DamnStupidElf · · Score: 1

      It only makes more "sense" in the sense that this is a cheap way of solving the problem of why this particular universe exists, and why we have free will in it.

      On the contrary, the a priori assumption that there is only one universe is unfounded. Right now we have two very accurate models of reality; quantum mechanics and general relativity. The two haven't been reconciled into a single theory yet, but it is probable that they will be at some point. If a complete mathematical theory exists that explains our observable universe, then the universe is fundamentally equivalent to that model, in other words there is no difference between physical existence in our universe and expressibility in a mathematical model of the universe. Mathematics exists because of the relationships formed between mathematical objects by the axioms we pick. No matter who discovers or follows the axioms, the results from the same axioms are always the same. Moreover, objects within the mathematical model possess their relationships independently of who observes those relationships. There are an infinite number of prime numbers despite the fact that we cannot enumerate all of them. Likewise, if we find a consistent model of physics then there would exist a mathematical model of the universe which describes it exactly, and even though we could not enumerate all of its history, that history would still exist with in the mathematical model. At some point in the history, the mathematics representing me posts a message to slashdot, and it happens independently of anyone outside the universe observing or making it happen. From there, it's easy to see that every mathematical model possesses just as much existence as the model of our universe, therefore all universes that can be mathematically modeled exist. This hypothesis is falsifiable; simply prove that the universe cannot be mathematically modeled.

      I think free will is caused by the inability to completely predict the outcome of our actions, which makes actions appear to be causally independent of the outcome. Basically, we must choose first and then await the results. If we knew the end result of every possible action it would be obvious which action we should choose, and therefore also obvious which action we would actually choose, removing any possibility of free will except perhaps for a single first choice that would decide every future choice as well. Such a first choice could not be freely made, however, because by its nature it is the very first action, and thus fully defined by initial conditions.

      Then for each possibility that I choose among, I choose absolutely every single one of them. And the universe forks at every single choice-point - at least all the considered ones (probably even the unconsidered ones). Okay, positing that, then what the hell is all this effort of choosing about? And why do we hold people responsible for their choices, when at the same time they almost infinitely choose something(s) else? And wtf is the biological advantage of conscious choosing, such that creatures like us would embody it evolutionarily speaking?

      Not all universes contain living organisms. The vast majority probably do not. Universes in which poor choices have been made by organisms in the past have significantly fewer of those organisms. While it's true that there must exist universes where life exists in seemingly impossible situations, those conditions are almost certainly much rarer than universes like ours. Therefore an average intelligent being will be more likely to find itself in a regular universe. There are many choices that I make every second, a large majority lead directly to death. In the futures of those universes, I am not around to wonder about the nature of the universe, leading my living selves to conclude (rightly) that correct choices matter for my survival. None of my conclusions contradict a single universe hypothesis, I still must make the best choices I can in order to survive, and for me part of surviving is living in a mo

  20. Time travel is impossible. by Anonymous Coward · · Score: 0

    Time is used, it cannot be reused. Is the Universe expanding into nothing or is it expanding into time (existence itself)?

    Can Ziggy help?

  21. Push it to the limit by Rob+T+Firefly · · Score: 2, Funny

    I wonder if investors' safety is guaranteed.

  22. The problem with Time Travel, etc. by XxtraLarGe · · Score: 1

    Isn't the basic premise that if sending messages back to the past is possible, we'd have received some by now? Seems like that's the same type of premise w/SETI as well. If there was intelligent life somewhere in the galaxy, we'd have already picked up the messages, unless of course, we're already the most advanced life forms.

    --
    Taking guns away from the 99% gives the 1% 100% of the power.
    1. Re:The problem with Time Travel, etc. by jjh37997 · · Score: 1

      The thing is, if the man is correct, his device will be able to send messages back through time. But it will only be able to send messages back as far as when the device was first created. As a result, the reason we've never received messages from the future is because he has not built his device yet. Think of it as a time radio or a time bridge.... messages from the future can't arrive until those of us in the "past" finish work on our end.

    2. Re:The problem with Time Travel, etc. by Anonymous Coward · · Score: 0

      Maybe it's possible that if there is other life they have a Prime Directive or something equivalent?

    3. Re:The problem with Time Travel, etc. by Anonymous Coward · · Score: 0

      We don't have a listening device for backward time communication so we can't receive it. Lets pretend radio was a way to send messages back in time, however we are in the stone age before anyone knows about EM radiation and no one can hear it.

    4. Re:The problem with Time Travel, etc. by CastrTroy · · Score: 1

      Maybe we haven't set up a proper receiver yet. Just as with SETI, you could detect our signals from the moon, or any other extraterrestrial location, but just because nobody is looking doesn't mean the messages aren't there. With SETI we're assuming that the signals are there, we just have to point our antennas at the right spot.

      --

      Anthropic principle: We see the universe the way it is because if it were different we would not be here to see it.
    5. Re:The problem with Time Travel, etc. by daskinil · · Score: 1

      Um, not quite. We are still discovering new planets and solar systems constantly. If there were other life forms, just as intelligent as us (we can't even travel to mars mind you), Do you really think they would have found us by now? Its not much of a proof saying intelligent life doesn't exist because they haven't found us. Exspecially when our "view" of distant stars may be millions of years old.

    6. Re:The problem with Time Travel, etc. by Paradigm_Complex · · Score: 1

      From what I understand, most (not necessarily this one, I didn't cheat and RTFA) send-messages-into-the-past theories limit the amount of time the information can be sent back to when the first device for this is activated. So, if this works and he should likely get flooded with messages as soon as it's finished. And on the SETI thing - it *could* be that intelligent life is just waiting for us to break the speed of light and get basic warp technology before contacting us. While there's logic to what you're saying, I don't think your point is really definitive.

      --
      "A witty saying proves nothing." - Voltaire
    7. Re:The problem with Time Travel, etc. by Anonymous Coward · · Score: 0

      Yeah but this implies that the standard most basic form of communcation using EMR is not just the most basic standard form of communication for our world but also other worlds as well. Who says that our technology and the steps we aquired it would parallel another species on another planet with different elements abundent than the ones we had/have? In other words...if there is an intelligent life form out there...they would adapt to their environment and nothing...no law of God or law of science says their first form of communication or future forms of communication must be radiation of some type.

    8. Re:The problem with Time Travel, etc. by XxtraLarGe · · Score: 1

      While there's logic to what you're saying, I don't think your point is really definitive. I know, I'm just a layman with a passing interest in sci-fi, space travel, etc. While I highly doubt there's a "prime directive" for any alien civilizations out there, I think something that could be equally as possible is like with the aliens in Ender's Game. They communicated telepathically instead of through the radio spectrum, so there was no way for us to receive their communication. A "Prime Directive" might be in the best interest of any alien civilization, as they wouldn't want us to get their advanced technologies.
      --
      Taking guns away from the 99% gives the 1% 100% of the power.
    9. Re:The problem with Time Travel, etc. by pyite69 · · Score: 1

      No, because when you first entangle the pairs, they are at the same point in time.

      Then, you move one of them really fast for awhile, and then relativity would separate them.

      This means that the pairs would have had to be entangled many years ago in order to use them now. Time travel may be possible in the future, but it would not allow you to go back to an arbitrary point in time

    10. Re:The problem with Time Travel, etc. by DoohickeyJones · · Score: 1

      As someone above touched on...not necessarily.

      What if it is possible to send messages in to the past, but only if the past recipient has a certain receiver configured just so?

      Until the receiver is built, we can't receive the message. Not even the message telling us how to build the receiver.

      Not saying that's the case, mind you...just sayin'

    11. Re:The problem with Time Travel, etc. by XxtraLarGe · · Score: 1

      What if it is possible to send messages in to the past, but only if the past recipient has a certain receiver configured just so? It seems to me that if messages from the future were possible, eventually, they'd be able to figure out a way to send them over the airwaves.
      --
      Taking guns away from the 99% gives the 1% 100% of the power.
    12. Re:The problem with Time Travel, etc. by nanohurtzGT · · Score: 1

      by XxtraLarGe (551297) on Tuesday June 12, @12:10PM (#19478759) Isn't the basic premise that if sending messages back to the past is possible, we'd have received some by now? Seems like that's the same type of premise w/SETI as well. If there was intelligent life somewhere in the galaxy, we'd have already picked up the messages, unless of course, we're already the most advanced life forms. Comparing time travel to SETI is like comparing a dog to a number two pencil. The SETI program despite popular beliefs is still in it's infancy and does not begin to encompass the broad spectrum of sub harmonics traveling through space. It's nothing more than a mechanized version of the human ear capable only of picking up signals. As our understanding of bounded harmonics increase SETI will be revisted again and upgraded each time. If were not getting any call backs from the "little green men" it's because were too insignificant to do so. Were sending our own to fight for oil and piles of sand and were the most sophisticated beings in the universe that EXPECTS to hear from aliens? Right HAR-HAR!! :)
    13. Re:The problem with Time Travel, etc. by Nasarius · · Score: 1

      Isn't the basic premise that if sending messages back to the past is possible, we'd have received some by now?
      Possibly.

      Seems like that's the same type of premise w/SETI as well. If there was intelligent life somewhere in the galaxy, we'd have already picked up the messages, unless of course, we're already the most advanced life forms.
      That doesn't follow. SETI does operate under the condition that any success will most likely come from other intelligent life that developed radio technology tens of thousands of years ago, I suppose. But you're talking about transmitting electromagnetic radiation across the galaxy. It ends up being highly directional, and IIRC, SETI still has a lot of sky to cover.
      --
      LOAD "SIG",8,1
    14. Re:The problem with Time Travel, etc. by DoohickeyJones · · Score: 1

      If flying through the air were possible, we would eventually be able to figure out how to do it just by waving our arms.

    15. Re:The problem with Time Travel, etc. by Fastolfe · · Score: 1

      One thing every possible civilization in the universe shares is the same immutable laws of physics, and the same basic components of matter and energy. Communicating with photons is natural and obvious, and those same laws of physics make photons of certain energies desirable or undesirable for long-distance communication. How your species developed makes little difference.

      There's always the possibility that some "new physics" will be discovered that is leaps and bounds more appropriate for this type of thing than photons, but there's no evidence of that yet and no reason to suspect it exists. Keep an open mind, sure, but you can't go through life assuming everything you know is wrong. Based on what we know today, it's the most likely choice (the only choice, really), so it makes sense to pursue it until we know otherwise.

    16. Re:The problem with Time Travel, etc. by in5ane · · Score: 1

      Maybe it's possible other life just want nothing to do with us :)

  23. John Cramer by FredK · · Score: 2, Interesting

    I've wondered why so few seem to pay attention to his ideas. He has offered the only explanation for the weirdness of quantum mechanics that makes any sense to me. See http://laputan.blogspot.com/2003_09_21_laputan_arc hive.html for Carver Mead's take on it.
    Fred

    1. Re:John Cramer by Anonymous Coward · · Score: 0

      In four years, they haven't corrected the grievous spelling error: "So without further adieu". In my eyes this site lost all credibility. I mean really now, "adieu"? If you're gonna try to use fancy expressions, you could make a little effort to spell them correctly instead of coming across as a retard. "Adieu" means goodbye in French, perhaps he meant "ado"?

  24. Self followup.... by nweaver · · Score: 1

    OK, he doesn't seem QUITE so loony. But I remember seeing some nice proofs how EPR doesn't violate causality, because it can't transmit classical information.

    But I don't remember how those proofs work, because quantum gives me a headache.

    --
    Test your net with Netalyzr
  25. Haven't they watched Bill and Ted? by ebcdic · · Score: 1

    Why don't they just get the money from under the book on the shelf where they're going to put it once they've made megabucks?

    Business plan:

    Profit!
    ???
    Invent time travel

    1. Re:Haven't they watched Bill and Ted? by onedotzero · · Score: 1

      If it works, I promise send a message telling me to not use up all of my mod points so I can mod this funny!

      ...

      Damn it :(

  26. In that case please.... by Burb · · Score: 1

    Tell them to go back to the late seventies and tell them that the 8086 architecture is too simple and must be radically complexicated. Oh, they've already done that.

    --

  27. Good idea by Usquebaugh · · Score: 4, Interesting

    I find the idea of public funded science research heart warming. No need for the government or the science establishment to get involved. If an individual wants to contribute good for him and the researcher.

    I care not if I think the researcher is not all there, it's not my money.

    For instance Robert Bussard is trying to raise funds to continue his fusion research. Now I don't think he spent money wisely in the past, I don't think he was too smart in his dealings with the DoD, I do not think he has solved all the problem. But I do think he is the closest to cheap fusion. Should I fund him?

    My only stipulation is that everything must be published, not only the research but also the money trail. I want to see where the dork spent $10k on software.

    1. Re:Good idea by Dausha · · Score: 1

      "I find the idea of public funded science research heart warming. No need for the government or the science establishment to get involved."

      Public funded means the government funded it. Private funding means private citizens funded it. Or, did you intend for the confusion?

      --
      What those who want activist courts fear is rule by the people.
    2. Re:Good idea by apt142 · · Score: 1

      The problem with private funding is that only marketable, short term tech would be funded. It'd be much like the drug companies these days. 10 different formulas for ED and very few new vaccines.

    3. Re:Good idea by Bearhouse · · Score: 1

      $10K on sw?

      You must have missed some of the posts from "IT professionals" on this site...

    4. Re:Good idea by Ploum · · Score: 1

      I exactly think the same but with the army. Just think one second about that...

    5. Re:Good idea by Usquebaugh · · Score: 1

      My bad.

      I meant private thou like a moron I wrote public.

  28. Sounds Clinton-esque... by Bob-taro · · Score: 1

    Cramer has proposed an explanation that doesn't violate the speed of light but does kind of mess with the traditional concept of time.
    Isn't time travel impossible?
    Well, that depends on your definition of "time" ... and "travel" ... and "is".
    --
    Prov 9:8 Do not rebuke mockers or they will hate you; rebuke the wise and they will love you.
    1. Re:Sounds Clinton-esque... by Orange+Crush · · Score: 1

      Well, that depends on your definition of "time" ... and "travel" ... and "is".

      Not really. We're all time travellers, it's just a one-way trip into the future. It's also perfectly possible to alter the rate at which time passes for one observer vs. another by changing relative velocities--though the effects are negligible at any speeds we're capable of (outside of particle streams in accelerators).

  29. Remember, folks... by InfinityWpi · · Score: 2, Insightful

    Not every crackpot is really a brilliant genius... but almost all brilliant geniuses were, at one point, considered to be crackpots.

    1. Re:Remember, folks... by sgt_doom · · Score: 1

      Speaking of crackpots, a great early SF treatment of time travel can be found in the original Outer Limits' show written by Harlan Ellison, entitled "The Glass Hand." Really outstanding.

  30. Investment chain by j00r0m4nc3r · · Score: 1

    I'm thinking the local pub will receive about $35,000 in funding over the next year or so...

    1. Re:Investment chain by Farmer+Tim · · Score: 1

      I'm thinking the local pub will receive about $35,000 in funding over the next year or so...

      Of course it will: pubs are well know for temporal anomalies. I've lost count of the number of times Friday night has disappeared mysteriously and turned into Saturday afternoon.

      Time travel causes killer hangovers, apparently.

      --
      Blank until /. makes another boneheaded UI decision.
  31. Spooky action and entagled pairs... by phloe · · Score: 1

    ...what did he need the money for again?

    oh, right - to travel into the future - 30 seconds a time I bet.

  32. the answer is .. by rs232 · · Score: 1

    The answer is 47 ..

    --
    davecb5620@gmail.com
    1. Re:the answer is .. by u-bend · · Score: 1

      OK, uh, that's kinda messed up...

      --
      u-bend
    2. Re:the answer is .. by pclminion · · Score: 1

      The 47 jokes got pretty old after my first couple of months at Pomona. However, I do still see the number 47 everywhere.

    3. Re:the answer is .. by u-bend · · Score: 1

      Soooo, is this seriously studied there as the site would have one believe?

      (This may seem like a troll, but it's not--I'm genuinely curious.)

      --
      u-bend
    4. Re:the answer is .. by pclminion · · Score: 1

      Not "seriously studied." It was the kind of lame shit somebody would bust out at a party when conversation stalled. One of those "in things" that somehow became "too in" and started to suck.

      When I bought my house, one of the things I did when I was up on the roof cleaning the gutters was count the number of aluminum roofing units (my roof is metal). Sure enough, there were 47 of them.

      Pomona was a fascinating place. The kind of place where a professor (and I don't mean some young buck, but a grizzly, gray-haired old Greek literature instructor) would supply the kegs at the party. And the administration didn't care. I have no idea if it's still that way. I stopped by the campus a few years ago and walked through for nostalgia's sake. It looked pretty dead.

  33. My future self just phoned me... by monkeyboythom · · Score: 1

    and said don't bother. Zombie-robot Microsoft President-for-Life Ballmer stuns the world of 2021 that he indeed owns the patents for time travel (both Windows and Linux versions).

    Instead my future self tells me that I am very wealthy because I [will] license my genome to some guy named Palpatine...

  34. First post using time travel by garoush · · Score: 1

    His research actually works! And the prof for it is this first post which was posted yesterday BEFORE this article showed up on /.

    --

    Karma stuck at 50? Add 2-5 inches.. err.. 2-5x Karmas Count to your pen1es.. err.. Karma all naturally and private
  35. The Vulcan Science Directorate... by DirtySouthAfrican · · Score: 1

    ...has deemed time travel impossible.

  36. Transactional interpretation isn't crazy by tylersoze · · Score: 2, Informative

    This guy isn't crazy, the idea of using advanced waves goes all the way back to Feynman (see Wheeler-Feynman absorber theory which is what this is based upon). This merely another interpretation of Quantum Mechanics. All he's trying to do is see if we can experimentally verify it as producing different results than the "standard" interpretations. It's called science people, look into it. Sometimes crazy ideas turn out to be true, you don't know until, you know, you run experiments. As crazy ideas go, this one isn't that off the wall, it's based on actual physics. There's no FTL involved, the transactions all occur at the speed of light through advanced and retarded waves.

    http://www.npl.washington.edu/npl/int_rep/ti_over/ ti_over.html
    http://www.npl.washington.edu/npl/int_rep/tiqm/TI_ toc.html
    http://www.npl.washington.edu/npl/int_rep/dtime/no de2.html

    1. Re:Transactional interpretation isn't crazy by DirtySouthAfrican · · Score: 2, Informative

      And for those who don't want to read all that... http://en.wikipedia.org/wiki/Transactional_interpr etation It sounds very much like conventioanl QFT viewed through 1930s eyes... Especially the part about waves cancelling. Expectation values of commutation relations vanish (decay exponentially) outside the lightcone where they are acausal.

    2. Re:Transactional interpretation isn't crazy by pclminion · · Score: 1

      This guy isn't crazy, the idea of using advanced waves goes all the way back to Feynman (see Wheeler-Feynman absorber theory which is what this is based upon).

      Except that Feynman demonstrated that the advanced waves ALWAYS cancel each other completely, UNLESS they propagate "beyond the edge of space," i.e. into a region with infinite extent and zero charge density. Since such a region is awfully hard to find around here (I keep looking for the pit of nothingness but can't seem to locate it), it would seem that advanced waves are pretty irrelevant in our day-to-day existence.
    3. Re:Transactional interpretation isn't crazy by Anonymous Coward · · Score: 0

      I keep looking for the pit of nothingness but can't seem to locate it Have you tried looking at CERN or Brookhaven?
    4. Re:Transactional interpretation isn't crazy by pclminion · · Score: 1

      Interesting idea, but even if we could create uncancellable advanced waves inside a black hole, what good would it do? They're inside the black hole, unable to influence anything outside the horizon.

    5. Re:Transactional interpretation isn't crazy by Anonymous Coward · · Score: 0

      the transactions all occur at the speed of light through advanced and retarded waves. You mean like this?
  37. It is not possible by ravishjunk · · Score: 1

    if it were, people from the far far far future would have traveled and we would have known about. Or it is possible that during the time time travel is invented people found that the time now and the past is so boring that no one wanted to visit

    1. Re:It is not possible by rholland356 · · Score: 1

      What the time travelers discovered in 1857 (yes!) was that you don't get space travel for free. And because the earth moves through space, the first time travel experiments sent slugs and mice and eventually some monkeys into the void of space the earth had passed through.

      Realizing this limit, the first human time traveler attempted to project himself onto the earth at a point 6 months in the past, so that he would arrive on a physical earth. His power calculations were off by half and he went back in time only 3 months and found himself in the center of the Sun.

      This is the real crux of Scientology, BTW.

      Oh, and the Tunguska impact? That was an errant visitor from our future.

  38. Man, everyone knows by Jimmy+King · · Score: 1

    the Einstein-Rosen-Podolsky bridge doesn't allow time travel. It allows you to travel to parallel universes but at the SAME time as it is in your universe.

  39. Perfect target for the Facebook group: by Anonymous Coward · · Score: 0

    "For every 100 who join by yesterday, I'll donate $1 to time travel research"
    http://osu.facebook.com/group.php?gid=2229376042

  40. were all time travelers by FudRucker · · Score: 1

    We all are time travelers and that clock on the wall is the speedometer...

    Seriously though i doubt time travel is even possible, this guy is whacked...

    --
    Politics is Treachery, Religion is Brainwashing
    1. Re:were all time travelers by Anonymous Coward · · Score: 0

      Technically, the clock on the wall is the odometer. Too bad it resets after every 12 hours.

    2. Re:were all time travelers by Anonymous Coward · · Score: 0

      The clock would be the odometer.

    3. Re:were all time travelers by Opportunist · · Score: 1

      Any way to throttle up during work hours?

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
    4. Re:were all time travelers by FudRucker · · Score: 1

      no, the clock is the speedometer and the calender is the odometer...

      --
      Politics is Treachery, Religion is Brainwashing
    5. Re:were all time travelers by FudRucker · · Score: 1

      if you can find the gas pedal...

      --
      Politics is Treachery, Religion is Brainwashing
    6. Re:were all time travelers by genner · · Score: 1

      Both wrong, clock and calander are both odometers.
      Speedometer is fixed at a constant rate of sixty seconds per minute.

  41. I'm putting some money in my will by samuel4242 · · Score: 1

    It should arrive yesterday if this thing really works.

  42. Information is TimeTravelling, not phisical matter by C0deJunkie · · Score: 1

    What you need to realize is that the underlying theory (entangled particles) permits the information to travel acress time, non the matter. In fact it permits the information a a particular particle "state" to trave trhough time. That's quite different from making phisical matter to decompose and appear in the future or in the past.

  43. First by charlieo88 · · Score: 1

    Time travel? Sheesh, the lengths some people will go to, to get the first comment on /.

  44. If quantum entanglement is real... by pyite69 · · Score: 1

    then this is a great idea. It is not like you will be able to create a wormhole or anything, but maybe you could theoretically use it to send morse code to the future or past.

  45. He fails by Anonymous Coward · · Score: 0

    If he was successful in sending messages through time, we'd know about it already!

  46. The Einstein-Podolsky-Rosen Bridge? by pboyd2004 · · Score: 1

    If this is the same thing as the Einstein-Podolsky-Rosen Bridge. Then they'll just end up bouncing from one slightly different earth to the next. And then they get to run into Kromags...

  47. Maybe I'm Old Fashioned.... by slas6654 · · Score: 1

    ...since when did the federal government become sugar daddy to the university research world. Its crazy that we, as Americans, have come to accept the financing of every crackpot research project vis-a-vis the Federal Treasury. Why is it that every university in America finds it absolutely imperative to bankrupt the country on crazy ideas?

    Why is it so remarkable that a scientist has to go to the private sector for money ?

  48. RIAA Funded by lbmouse · · Score: 2, Funny

    "This country puts a lot more money into things that seem to me much crazier than this," said Mitch Rudman, a music industry executive in Las Vegas whose family foundation donated $20,000 to the experiment.

    Oh no! This must be a conspiracy to allow RIAA hit-men to go back into time and take out the Internet before it was born.

  49. So that's what they use all that money for by DefenderThree · · Score: 1

    "This country puts a lot more money into things that seem to me much crazier than this," said Mitch Rudman, a music industry executive in Las Vegas whose family foundation donated $20,000 to the experiment. "It's outrageous to me that talented scientists have to go looking for a few bucks to do anything slightly outside the box." All these years I've been wondering where all the money from RIAA record sales actually goes. Now I know.
  50. Actually, it IS FTL. by Rachel+Lucid · · Score: 1

    Logically, the best way to make FTL communications is not to make them beat the speed of light per se, but to make them able to travel back in time so they APPEAR to be FTL when in fact the messages sent took far longer to get to their destination.

    This would give us communication that appears to be FTL, but with the consequence that we still can't send organic materials back in time the same way ('cause they'd probably age ridiculously by the time they got there), AND it would get around the pesky paradoxes of traveling back in time since you're never sending anything later than what time it already currently is - The message is the only thing traveling back in time, in other words.

    1. Re:Actually, it IS FTL. by brunascle · · Score: 1

      how would that work? how could it go backwards in time if time (relative to it) is moving forwards?

    2. Re:Actually, it IS FTL. by Rachel+Lucid · · Score: 1

      It would only need to hop back in time when it reached its destination so that it arrived at the time it was sent - think 'rubber-band' time travel.

    3. Re:Actually, it IS FTL. by stevesliva · · Score: 1

      I was thinking along the same lines. If you can send information back in time, all that you need to do is send that information to the destination at the fastest means available, and then send it back in time. That would then be FTL communication, to any location.

      The real trick is to actually send it even farther back in time, so that the pizza deliveryman anticipates your hunger and arrives before you even make the phone call.

      --
      Who do you get to be an expert to tell you something's not obvious? The least insightful person you can find? -J Roberts
    4. Re:Actually, it IS FTL. by Ant+P. · · Score: 1

      Depending on how long the time travel can be, I can think of other uses for it. I wonder how many GB of virtual memory you could juggle in a time loop...

  51. Wohooo! by Anonymous Coward · · Score: 0

    I did it, I did it!

    -- Hiro

  52. UConn's got a guy too..... by SammysIsland · · Score: 1
    There is a professor at UConn, Ronald Mallett, currently in the process of raising funds for a time travel experiment. He has also written a book describing his life and goals.

    This is a different method of time travel using circulating light to bend space-time and create time loops.

  53. Ender's game by Osurak · · Score: 0

    Sounds like philotic theory from the Ender's Game series

  54. Maybe they did... by KingSkippus · · Score: 4, Funny

    How do you know they didn't?

    Sure, it may seem like it's a foolish investment, but if it pays off... Oh, man... Invest a penny at the beginning at time, and before you know it, you'll be dining at Milliways.

    1. Re:Maybe they did... by HTH+NE1 · · Score: 2, Insightful

      Invest a penny at the beginning at time, and before you know it, you'll be dining at Milliways.
      Better check that (1) your bank will continue to exist for the requisite period ("Do you take Visa?" "Visa hasn't existed for 500 years." "American Express?" "600 years." "Discover card?" "Sorry, we don't take Discover."), and (2) that they don't have restrictions that you (a) maintain a minimum balance or (b) maintain a minimum account activity where, if either is violated, they start taking away your money (and, in the case of (b), do it retroactively from the month of your last transaction--yes, some banks do do this), and (3) their policies won't change over the course of your investment.
      --
      Oh, say does that Star-Spangled Banner entwine / The myrtle of Venus with Bacchus's vine?
    2. Re:Maybe they did... by beckerist · · Score: 2, Insightful

      Or...invest in a few gallons of oil, or a few big diamonds, or have your future self send you the names of all the famous artists of the time (and buy some of their stuff for CHEAP!)

      Money rarely (and certainly not predictably) INCREASES in value over time...inflation alone generally out paces all other economical factors. Your best bet is in the value of rare goods...

    3. Re:Maybe they did... by daddymac · · Score: 1

      have your future self send you the names of all the famous artists of the time

      Ahh, but if your future self did this, you'd be rich in the future, and have no reason to send a message. Hasn't anyone seen the crappy remake of "The Time Machine"?
      --
      If something I said can be interpreted two ways, and one of the ways makes you sad or angry, I meant the other one.
    4. Re:Maybe they did... by beckerist · · Score: 1

      The moment the message was sent, and your past self read it, that future would no longer be on the path through time that you're following. You'd need a future where you turn out poor (but fortunate enough to send a message back in time!) and warn yourself of HOW you turned out poor... Yeah, I saw the crappy remake too but all I remember was the image of the cracked moon...(freaking cool, but the rest of the movie sucked!)

      OR, I can just make sure I'm constantly saving a little now, and be well off in 30 years when I retire...

    5. Re:Maybe they did... by ultranova · · Score: 1

      Ahh, but if your future self did this, you'd be rich in the future, and have no reason to send a message. Hasn't anyone seen the crappy remake of "The Time Machine"?

      Yes, and I've also played Chrono Trigger, so I know exactly how to deal with this problem:

      1. Get a (mindless) clone of your girlfriend.
      2. Exchange the clone with the real thing just before the bullet strikes.
      3. Your past self thinks that your girl died, and will go on to invent the time machine.

      In other words, it's the good old "you can change the past, as long as any observable consequences are delayed until after you made the decision to do so".

      --

      Forget magic. Any technology distinguishable from divine power is insufficiently advanced.

    6. Re:Maybe they did... by Anonymous Coward · · Score: 0

      You'd still have a reason and that reason would be you'd send the message in the future because you received the message in the past and you know you have to send it, unless of course you weren't happy with the way the future turned out as a result of the note.

  55. Two Ideas by endianx · · Score: 1
    • In the time between now and the time when existence as we know it is destroyed, time travel will never be invented. If it was, someone would come back in time to tell us about it.
    • Time travel will be invented, but not used because it is too dangerous (hence why nobody ever came back in time to tell us about it). If this is the case, it is still useless and why invent it in the first place?
    Either way, research in to time travel appears to me to be useless.
    1. Re:Two Ideas by Doc+Ruby · · Score: 1

      How do you know time travel works like that?

      --

      --
      make install -not war

    2. Re:Two Ideas by Phisbut · · Score: 1
      How about a third option where time is flowing in one way only, and therefore, time travel can also only go one way. You can travel into the future but not into the past, making it a one-way trip.

      Still, nobody could come back to tell us about it, and it'd take a while to actually prove it worked, but still possible.

      --
      After 3 days without programming, life becomes meaningless
      - The Tao of Programming
    3. Re:Two Ideas by BarryJacobsen · · Score: 1

      Still, nobody could come back to tell us about it, and it'd take a while to actually prove it worked, but still possible.
      Unless there is a minimum time forward requirement, it could take as little as one minute (if not less) to prove it worked.
    4. Re:Two Ideas by magarity · · Score: 1

      How do you know time travel works like that?
       
      Since it's fiction, it works however he wants it to in his post. Feel free to write your own version in yours if you like another one better and, for even more fun, argue that your fiction is the one that's right. Happens all the time in certain other fictional subjects.

    5. Re:Two Ideas by Doc+Ruby · · Score: 1

      All science is fiction until the experiments determine the actual boundaries. And even then, more science can reveal those boundaries were limits of the prior experiments.

      Is Einstein's rotating cylindrical black holes, which effect nonlinear time travel, fiction?

      --

      --
      make install -not war

    6. Re:Two Ideas by gr3kgr33n · · Score: 1

      • In the time between now and the time when existence as we know it is destroyed, time travel will never be invented. If it was, someone would come back in time to tell us about it.
      • Time travel will be invented, but not used because it is too dangerous (hence why nobody ever came back in time to tell us about it). If this is the case, it is still useless and why invent it in the first place?
      Either way, research in to time travel appears to me to be useless. What about if time travel was limited to time references at or after the point time travel was invented. Time travel beyond this point in time results in a paradox in which the universe prunes the fork in the tree of universes?

      Once you invent time travel you meet yourself as say:
      "Congradulations, You (I) have invented time travel. Don't go past this point or you will cease to exist. But how do I know this you ask? I'll Be right back."
      *POOF* he disappears; never to reapear.

      I like the idea of the multiverse with automatic paradox pruning.
      "God was a mathematician with a programmer's instinct, and I like to believe we are the first beta test. It would explain so many things. " -S. Story
      --
      My backup chemistry thesis stored on Data Storing Bacteria mutated; granting me a degree in forensic anthropology. v4sw7
    7. Re:Two Ideas by BritneySP2 · · Score: 1
      why nobody ever came back in time to tell us about it

      Because the probability of somebody to come back to our particular timeline is very small. In other words, the number of time travelers is much smaller than the number of timelines they can come back to.

      As a side note: in fact, time travel does not create any paradoxes whatsoever. Traveling to the future can be though as "trivial": you just need to put yourself in a sort of a hibernation in a safe place. The important thing to note when you wake up is that you have altered the past (e. g. by the very fact of your disappearing from the active life). Moreover, you change the past regardless of the direction in which you travel. If you go to the past, you affect the timeline at the moment you emerge from the "time machine", so no paradoxes are created, because it is not the time line you came from: you can only prevent your parents from conceiving your copy, not you, of course.

  56. $35,000? by markbt73 · · Score: 1
    --
    "Oh boy! Are we going to try something dangerous?"
  57. Obligatory "Safety Not Guaranteed" by Anonymous Coward · · Score: 0

    WANTED: Somebody to go back in time with me. This is not a joke. You'll get paid after we get back. Must bring your own weapons. Safety not guaranteed. I have only done this once before.

    http://timetraveler.ytmnd.com/

  58. He's onto something by nanohurtzGT · · Score: 1

    Wow, the level of cynicism in this forum is shocking and laughable. Definitely, the result of the technological rhetoric through media, and ignorance that will not exist when (note the word) time travel becomes common place. Will this "technology" fall into the wrong hands? Will "bad" guys do bad things with this? I don't think so, as we would have evolved passed the baseless dependencies of governing defined morality (ergo laws) and the debilating need for money. Time travel will only exist within the subjects periphery. Go replay the winning lottery tickets, you'll win, but neither me or the silly audience here will know about it. Very simply, time travel (or the perception of) is but a label implied by our limited language and understanding of something we are already doing as you are reading this reply. Time travel is nothing more than the manipulation of energies. Consider E=MC2 if you can, without hurting your brain or ego. Albert Einstein was onto something, and so is this brave scientist. If I had a billion dollars to give to this man, I would in a heart beat. Nevertheless, I will be funding his endevour as best as I can. Laugh now, go fuel up on fossil, and vote for your next president, since no-one in this forum (myself included) will not live to see this ability (not discovery or invention) in the immediate future.

    1. Re:He's onto something by abigor · · Score: 1

      ALERT: parent is a kook.

  59. Al Bielek by zogger · · Score: 1

    I actually met and got to speak to the guy behind the "philadelphia experiment" legend. Rather fascinating story as he told it but he was obviously starting to suffer from age related problems. I was at a lecture given by someone else and turned out to be sitting right next to the guy. After the lecture we hung around and talked for maybe 1/2 hour or so and I got the cliff notes version of the whole deal. Now I don't give it a ton of credence or anything, just it was a nice story told by an old geezer.

    My opinion, time travel might be possible, but only one way, into the future. But who knows. The physics behind our version of reality is *so* complex and they are still learning so much that I think it could be possible eventually. String theory, multiple universes, always getting tangled up in piles of quantums,and etc.

      And scientific attitudes can change radically, I am old enough to remember (as pointed out by some others in a previous slashdot conversation from a few weeks ago) when plate tectonics was roundly "debunked" all the time. Much hooting against it.

    Anyway, our society *needs* crackpots, one out of a hundred comes up with something really cool. There's a rather thin line sometimes between genius and bonkersville.

    1. Re:Al Bielek by Anonymous Coward · · Score: 0

      Plate tectonics is still somewhat debunked; it offers no explanation for the continental shelf.

      It also doesn't explain why the earth was lopsided throughout most of its history (all the land on one side, all the ocean on the other). That seems rather arbitrary, which is fine for observation but never for prediction (i.e. theory).

  60. These People aren't Investors by m1a1 · · Score: 5, Insightful

    Most of the comments here make no sense.

    These people are not investors. They did not get "scammed". Those of us who read the article know that this scientist did not even approach them for cash. Rather, news of his plight got out and people wanted to donate. He is a respected particle physicist with a theory that is a little odd. He wants to perform a relatively cheap experiment which should show whether his theory has enough going for it to be worth further examination. If these experiments fail, oh well, back to the drawing board.

    This is the way science is SUPPOSED to work. There's nothing wrong with being skeptical, but acting like this guy is a scam artist is ridiculous. This guy runs a super collider, yet everyone here is so damn sure they understand quantum phenomenon better than he does.

  61. Two counterpoints by BeanThere · · Score: 4, Insightful

    (1) Perhaps there are, and these investors are them.
    (2) Not necessarily, if one needs to develop a special kind of "receiver" in order to receive the messages, then the first point in time at which such messages could be received would be when such receiver technology was invented (such point in time would be in the future still). If that point was in, say, 2015, then you could send messages from 2019 to 2015 but not from 2019 to 2007. You could *send* such messages, but nobody would have the technology to even realise that such messages were being sent. Like transmitting radio signals to cavemen.

    1. Re:Two counterpoints by Loconut1389 · · Score: 1

      unless you could send an AM or FM signal through time and send it to the beginning of radio.

    2. Re:Two counterpoints by Alsee · · Score: 5, Funny

      Like transmitting radio signals to cavemen.

      Cue pissed off insulted caveman Geico commercial.

      -

      --
      - - You can't take something off the Internet! That's like trying to take pee out of a swimming pool.
    3. Re:Two counterpoints by s4m7 · · Score: 5, Funny
      Dear Sir,
      I am writing to inform you that I have recieved a message from your future self. Included is the text from that message.

      Hello, me! I just wanted to let you know that I (you) got rich by investing in this man's method of time travelling messages! I (you) invested $2000 just one week after I (you) recieved this very message, and within six months I (you) was a millionare!
      signed, Me (You).

      Here's my address..
      --
      This comment is fully compliant with RFC 527.
    4. Re:Two counterpoints by Anonymous Coward · · Score: 0

      I didn't know I was from Nigeria! You learn something new everyday.

  62. Maybe.... by Elsan · · Score: 1

    ...the investors had gotten messages from their own selves from the future to invest in this guy...!

  63. $5 by RichMan · · Score: 1

    I would send him $5 for a share in the global win from next weeks lotto numbers

  64. Re:Information is TimeTravelling, not phisical mat by brunascle · · Score: 1

    but information is matter. information cannot exist without matter (matter includes energy) and vice-versa. you cannot transmit information without trasmitting matter.

    and nothing is travelling in the normal sense. there's a few different ways of describing what's actually happening. i like the many-worlds interpretation.

  65. This explains it!!! by Anonymous Coward · · Score: 0

    Now I think I understand why I had $35000 in my sock drawer this morning!!

  66. I am an investor. by Peter+Trepan · · Score: 4, Funny

    I have yet to hear of any results, although I did have a strange experience the other day. I was about to try my first sip of Milo's Famous Sweet Tea when a 500 lb man appeared from thin air and knocked the glass from my hand before disappearing again.

    --

    Step into a huge movement. Don't Tread In Me.

    1. Re:I am an investor. by evilviper · · Score: 1

      Are you going to finish your polonium?

      --
      Slashdot gets worse every day... Pipedot: News for nerds, without the corporate slant
  67. Not a crackpot. by sconeu · · Score: 3, Informative

    This is based on the Transactional Interpretation of Quantum Mechanics.

    It's based on hard science, and makes testable predictions. TFS grabbed the most sensational lines from TFA.

    --
    General Relativity: Space-time tells matter where to go; Matter tells space-time what shape to be.
    1. Re:Not a crackpot. by PaulMorel · · Score: 1

      I was about to make the same comment.

      I like this line in the summary: "Despite the implausibility of the science here ...". That's a 'journalist' inserting bias right there. Even Roger Penrose won't tell you that time travel is impossible, yet a cocky slashdot editor will.

      --
      burrocrisy
      and that would be what? Ruling by jackasses? Never has a slashdot misspelling been more apropos
  68. Theory and Implementation by TheGreatOrangePeel · · Score: 1

    I'm not privy or even remotly knowledgable about all the theories or facts involved, but I DO know that they should be in heavy communication with the post office as they're bound to know a few things about sending messages that so obviously intuitive to them but are beyond our means. Again, I don't claim to understand all the workings of this stuff, but I DO know that one time I set myself a letter in the mail, and it got to me in the future! The USPO clearly has got SOME kind of message/time machine up and running. Moderation: -5 WTF?

  69. I wanna see this technology at the network layer.. by idontgno · · Score: 1

    myserver:/home/idontgno > ping science.slashdot.org
    PING science.slashdot.org (66.35.250.150): 56 data bytes
    64 bytes from 192.168.65.24: icmp_seq=0 ttl=255 time=-23.45 ms
    64 bytes from 192.168.65.24: icmp_seq=1 ttl=255 time=-20.84 ms
    64 bytes from 192.168.65.24: icmp_seq=2 ttl=255 time=-21.33 ms
    64 bytes from 192.168.65.24: icmp_seq=3 ttl=255 time=-19.43 ms

    ----science.slashdot.org PING Statistics----
    4 packets transmitted, 4 packets received, 0% packet loss
    round-trip min/avg/max = -23.45/-21.26/-19.43 ms
    --
    Welcome to the Panopticon. Used to be a prison, now it's your home.
  70. Is this scientist a relative of P.T. Barnum? by really? · · Score: 1

    'cause, he sure has the fleecing art down to a science.

    --

    "Consistency is contrary to nature, contrary to life. The only completely consistent people are the dead." A. Huxley
  71. What is time, anyway? by coyote-san · · Score: 1

    Everyone is overlooking the rather large elephant in the room. What is time, anyway?

    It's a far deeper question than most people realize. Unlike the other dimensions, we can't step back and look at a temporal span from outside. Okay, we don't step out of the three dimensions, but we can step away from a meter stick and look at it from different angles. We aren't ants constrained to always remain on that meter stick. We aren't droplets of water always dripping down the stick, never climbing back up it.

    I think a NIST scientist (running the atomic clocks behind US civil time) put it best. The clocks don't measure time, they -define- time within the US. Who knows what really happens during any nanosecond period. We can never know since we occupy the same 'time', whatever that is, as the clock, so we could never know if the Flying Spaghetti Monster it the giant snooze button in the sky for awhile.

    Does this mean I'm eager to drop time's arrow and relativity? No, but it means that I'm open to the possibility that things are a lot grayer at the quantum level.

    --
    For every complex problem there is an answer that is clear, simple, and wrong. -- H L Mencken
    1. Re:What is time, anyway? by Kam+Solusar · · Score: 2, Informative

      Everyone is overlooking the rather large elephant in the room. What is time, anyway?
      Well, according to the latest Doctor Who episode:

      People assume that time is a strict progression of cause to effect, but actually, from a non-linear, non-subjective viewpoint, it's more like a big ball of wibbly-wobbly, timey-wimey stuff.
      I think that's as good as any other explanation (until some senator finally reveals the truth: that time is actually a series of temporal tubes...)
      --
      The Angels have the Phone Box
    2. Re:What is time, anyway? by joto · · Score: 1

      Actually, it is a cube...

    3. Re:What is time, anyway? by mshurpik · · Score: 1

      >What is time, anyway?

      Time is a measurement of your opportunity to action. It's a measurement of your window to move and interact with other particles. Light, which moves at maximum speed, has maximum opportunity and thus does not "age."

      The gray area of quantum mechanics may be explained by the coherence of the speed of light with other forces at small distances.

      There's no reason to "drop" relativity; all of quantum physics was born and is likely explained by it.

  72. Please bear in mind... by jd · · Score: 1
    A recent survey of Americans showed that 25% believe both in the theory of evolution AND the literal interpretation of the Book of Genesis and a 6,000 year-old Earth, at the same time. (The actual figures were: 50% believed in a young Earth & Genesis, 65% believed in evolution. People could pick more than one option.)

    If people can believe utterly contradictory ideas and accept them all as entirely true, then it is hardly surprising that they can be talked into believing in Time Travel. If people had better education in critical thinking, the inventor would be working on more interesting lines and the investors would be more careful.

    I am totally, 100%, for "blue-sky" research and for totally speculative work of the most daring kind, but daredevils in general are amongst the most meticulous people on Earth. Well, those that live past the first try, anyway. Those who produce the most amazing results are/were amazing observers, patient, thorough and intolerant of contradictions and conflicting information.

    I am also totally, 100%, against any system in which belief A must be held as divine truth in circumstance A, belief B must likewise be held as divine truth in circumstance B, where beliefs A and B cannot both be true. Unfortunately, this is common in schools, where different teachers in different subjects (and sometimes the same subject) insist that what they say is the Absolute Truth, no matter what the course textbook says, what experience or observation says, or what anyone else in any other class says.

    It is such systems that create the confusion and distortion in the brain that allows for confidence tricksters. If the brain is geared to accept the impossible, then conmen will have total freedom to sell the impossible. It's hard to blame the conmen for using an exposed API to the brain.

    Last, but not least, is the question of whether time travel can exist. Maybe, but not through an Einstein-Rosen bridge. It's not stable. There are wormholes that are potentially stable, but you need to line it with negative energy potential that has the mass equivalence equal to or exceeding the mass traveling through it, or it instantaneously collapses. The ends of the wormhole must also only ever exist in each other's future light cone. The restrictions keep on for a while, and it is entirely possible that enough restrictions exist to make a wormhole impossible by merit of contradiction. This has not been demonstrated - yet. All that has been shown impossible is time travel in the local time frame.

    --
    It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
  73. It's easy kids... by JamesP · · Score: 1

    Remember, first you have to build a FINITE improbability generator. THEN you just take its output and plug it back in its own input.

    --
    how long until /. fixes commenting on Chrome?
    1. Re:It's easy kids... by duguk · · Score: 1

      Don't forget the brownian motion generator.

      A fresh hot cup of tea.

  74. Is this really a good idea? by 0xdeadbeef · · Score: 1

    What's expected of us by Ted Chiang

  75. My project idea! by erroneus · · Score: 1

    I am embarking on a research project relating to having the ability to walk through walls. To that end, I need funding with which to build a brand new house complete with a Japanese style bathroom.

  76. OBVIOUSLY. by Anonymous Coward · · Score: 0

    Time travel is possible, otherwise why would we waste so much time thinking about it?

    The only answer? There are no investors in the future.

    Darwinism. They produce NOTHING.

  77. $35,000 is not an investment of any note. by ZWithaPGGB · · Score: 1

    That barely pays 2-3 months of any operation's overhead, never mind anyone's salary.

  78. Re:Information is TimeTravelling, not phisical mat by Anonymous Coward · · Score: 0

    What people need to realize is that quantum entangement is fundementally useless.

  79. Ken Swizzle... by BMonger · · Score: 1

    Ken Swizzle has a time machine.

  80. Re:Call me a skeptic by cno3 · · Score: 1

    Look around you. Are you sure you didn't just somehow end up at Burning Man?

  81. fun with time travel by jadin · · Score: 1

    Reply from 216.109.112.135: bytes=32 time=47ms TTL=50
    Reply from 216.109.112.135: bytes=32 time=47ms TTL=50
    Reply from 216.109.112.135: bytes=32 time=46ms TTL=50
    Reply from 216.109.112.135: bytes=32 time=45ms TTL=50

    c:\>ping yahoo.com

    (My apologies... I'm bored)

    1. Re:fun with time travel by k3vlar · · Score: 1

      (My apologies... I'm bored)

      Whatever. It was good for a chuckle, and that's all that matters.
      --
      Unlike porn, which yada yada rimshot hey-ooh!
  82. We'd already know ... by rbowen · · Score: 1

    If it were possible to send messages back in time, and if this problem is *ever* going to be solved, then we would have already received the messages. Therefore, this problem will never be solved.

    --
    Apache guy, Open Source enthusiast, runner
    1. Re:We'd already know ... by geekoid · · Score: 1

      I posted this in response earlier, but people dont' really seem to understand that statements fallacy.

      If we don't study it now, we will never discover it to use to come back.
      We must study it in order to be able to come back later.

      Stephen Hawking said, I paraphrase here,"Time travel isn't possible because there are no tourists."

      To which I have always thought. "How would we know?" It's not like we all ahve some hidden super secret hand shake that changes every generation. We ahve a very well documanted society and it would be trivial for someone 500 years from now to fit in. Jeans, T-Shirt, Sneakers. Viola' .

      Even if you came back in some all silver future suit, people would still just think you were nuts.

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
    2. Re:We'd already know ... by Farmer+Tim · · Score: 1

      Even if you came back in some all silver future suit, people would still just think you were nuts.

      My tin foil overalls aren't only stylish, but they protect not just my mind but every organ in my body from the government control satellites (you think the rise in diabetes is just a coincidence? They control your pancreas!)

      What's nuts about that?

      --
      Blank until /. makes another boneheaded UI decision.
    3. Re:We'd already know ... by vidarh · · Score: 1

      You are assuming that any such technology would send messages in a way that could be picked up by receivers we already have. There's no reason to believe that.

  83. Time? by lymond01 · · Score: 2, Insightful

    Some people think time is just a human construct...a way in which we measure the difference in the state of matter. If you think of reality as a motion picture of individual frames, time doesn't really come into the picture. Time travel doesn't make sense in this case because you can't actually bring everything in your near reality back to the state it was in before, never mind everything in the world, universe, etc.

    I can take a paperweight on my desk and move it 6 inches to the left, and then back 6 inches to the right...I've essentially caused the rock to time travel, at least on an easily observable level, because it's in the same easily observable state it was in before. On a quantum level, no...because various things have changed in the rock (the little bit of airflow from movement along with my fingers grabbing it and dragging it on the desk likely scraped some matter off).

    Anyway, just another crackpot way of looking at things.

    1. Re:Time? by javabandit · · Score: 1

      People don't *think* time is a human construct. It *is* a human construct. Let's be clear. "Time" is a way of indicating when something either has happened or will happen. It is also a way of indicating the duration of an occurrence. It is nothing more. And that word was created by humans to describe exactly what I said.

      Where things have gone awry is where some individuals have redefined time as being a component of location. Not just that, but that a location itself is actually the union of a physical and temporal location. Space-time.

      Your example of moving the paperweight isn't time travel. It is an example of regular physics. The force of your hand, pushing the paperweight, the inertia of the surface, the transference of energy. Its nothing more than normal physics. Time doesn't matter beans in that example... unless you care to just denote when that event occurred.

    2. Re:Time? by lymond01 · · Score: 1

      Time doesn't matter beans in that example... unless you care to just denote when that event occurred.

      My point exactly. Time seems to be just a reference...it's important to us because we deal with relative locations and seeing that something is fast or slow is just how the object was relocated in relation to the measurer.

      So "time travel" isn't anything really as it would require rolling everything back to some previous state. Not just yourself (though in Sci-Fi, the traveler usually doesn't change much) but the whole universe. Of course, this is just if you take the theory that there is no time, only different states.

  84. Great Now I can finally prove my arguement by HouseArrest420 · · Score: 1

    That if you go into the past, it is no longer the past but your present. Sure to the poeple you left behind you are now in the past....but it's your present, so they're actually in the future. Let me take the first trip, that way I can say something meaningful like Neil did, "Let's go back to the future!"

    --
    This is Slashdot! Give me the latest gadget, bug, or OS project! This ain't english class so don't confuse the two!
    1. Re:Great Now I can finally prove my arguement by nanohurtzGT · · Score: 1

      Theres one major problem to your theory in my opinion, it's based on time. Past, future, present, are non-sequitors to this. True time travel makes no use of those parameters. To plot it on a multidimension cartesian plane would be daunting with our limited understanding of it's mechanics.

    2. Re:Great Now I can finally prove my arguement by HouseArrest420 · · Score: 1

      That or my limited understanding of what you just said. But Ill go with what you said.....uh....yeah.

      --
      This is Slashdot! Give me the latest gadget, bug, or OS project! This ain't english class so don't confuse the two!
  85. The practical answer to the question of free will: by Peter+Trepan · · Score: 1

    Always behave as if free will exists.

    If it does, you're behaving appropriately. If it doesn't, you could not have behaved otherwise.

    --

    Step into a huge movement. Don't Tread In Me.

  86. Safety Not Guaranteed by Anonymous Coward · · Score: 0

    I have only done this once before.

  87. Instantaneous communication? by TheBearBear · · Score: 1

    if I have a 600,000,000 meter pencil out in space. And I push one end of it, when does the other end move? Instantaneously? Let's say i am on one end of the pencil and you are on the other. We agree that if you receive a push, the answer is 1. if the pencil is pulled away from you, then answer is 0. When I push or pull from the other end, how long does it take for you to realize it? Instantly? Same as the speed of light? In another scenario, let's say we are 600,000,000 meters apart. if I turn on a light, the answer is 1. if I turn it off, the answer is 0. But it will take approximately 2 seconds for that light to reach you. I have a pen lying on a flat surface. Regular pen. When I push the pen from one end, it moves. What I want to know is, the moment one end moves, when does the other end move as well? you know what i'm trying to say? When I push, does that force push the atoms from that end, causing a chain reaction and having it push the other atoms and so forth till the other end moves, and the whole pen moves. is it instantaneous? or does the end i push moves, and then .000000000000000000000000001 seconds later the whole end moves? ok, that might not make sense but here's what i am getting at. Suppose we can theoretically have a pencil out in space that is 600,000,000 meters long. basically it will take light 2 seconds to start from one end and go to the other. My question is, if you push that one end, when does the other end move? instantaneously? 2 seconds later (speed of light)? or slower? if its instantaneous, thats fricken awesome, cos we can theoretically have information travel faster than light. if it takes 2 seconds (speed of light), then would the pencil be short for that 2 seconds? like, if I push the pencil 1 meter, and the other end hasn't moved yet, wouldn't it be 599,999,999 meters? Wouldn't that be weird!

    1. Re:Instantaneous communication? by nanohurtzGT · · Score: 1

      If your rather large 600,000,000 meter pencil was a construct within a quantum bubble who's predefined point in space was -6e^2 x -6e^2 (-6e^4(2)|x1)) and you were to push one end of it, the reaction would be instanteneous. My point? That's one huge pencil and size is irrelevant for time travel.

    2. Re:Instantaneous communication? by Random832 · · Score: 1

      It would actually be the speed of sound (w/ the medium being the pencil itself, likely a bit faster than in air). And you're certainly _not_ going to be able to push it 1 meter instantaneously, think of inertia.

      It would start a compression wave through the pencil - which would likely have a fairly low amplitude as the material is not very compressible, but would be moving at, like i said, the speed of sound, and when it reaches the other end, the whole pencil is moving.

      --
      We've secretly replaced Slashdot with new Folgers Crystals - let's see if it notices.
    3. Re:Instantaneous communication? by d474 · · Score: 1

      I proposed this question in my college physics professor. He thought about it for a little while and said that the motion of the pencil, that is, the information of the push, the compression of the pencil (very small wave) would travel to the other end of the pencil no faster than the speed of light. It would of course travel slower than the speed of light, but factors such as material density and inertia would come into play. The answer makes sense to me.

      --
      Authority questions you. Return the favor.
    4. Re:Instantaneous communication? by Farmer+Tim · · Score: 1

      That's overlooking friction between the molecules in the pencil, and the fact that wood can compress more than 0.000,000,167%. The far end probably wouldn't move at all.

      --
      Blank until /. makes another boneheaded UI decision.
    5. Re:Instantaneous communication? by Random832 · · Score: 1

      It can compress, but there's nothing holding it in place at the other end, that's why you get a compression wave and not just, well, a compressed pencil. Overlooking friction is a standard practice smartass.

      --
      We've secretly replaced Slashdot with new Folgers Crystals - let's see if it notices.
    6. Re:Instantaneous communication? by Farmer+Tim · · Score: 1

      there's nothing holding it in place at the other end

      Except it's own weight and inertia.

      Overlooking friction is a standard practice

      Not in a physically correct model.

      smartass

      Insults don't prove your point or make you look clever.

      --
      Blank until /. makes another boneheaded UI decision.
    7. Re:Instantaneous communication? by Farmer+Tim · · Score: 1

      weight and inertia

      Of course I meant mass and inertia. Lack of caffiene.

      And to reiterate my point, consider an earthquake. One side of the planet may oscillate by several meters, yet this movement is barely detectable on the opposite side (despite rock being harder than wood), proving that the internal friction of a massive object is a factor that must be considered in a physically accurate model. Picking and choosing which parts of physics you apply is intellectually dishonest, calling me a smartass is disingenuous, and neither are "standard practice".

      --
      Blank until /. makes another boneheaded UI decision.
  88. Sounds familiar... by stevobi · · Score: 1

    If this sounds interesting to you, the novel Timescape by Gregory Benford is about some scientists who attempt to send messages into the past to prevent an ecological disaster from happening. Good book, won the Nebula.

    1. Re:Sounds familiar... by Anonymous Coward · · Score: 0

      It also sounds like "Thrice Upon a Time" by James P. Hogan.

  89. You damn socialists by Orig_Club_Soda · · Score: 0

    The OLD WAY *is* private funds. Taxation is for the incompetent.

  90. Dear God! by FST777 · · Score: 4, Funny

    Imagine you make said receiver, the first one ever invented. It would immediately spit out all kinds of spam messages from all kinds of futures.

    Now THAT would be annoying! Imagine turning the thing on for the first time ever, and immediately receiving Zetabytes of "Frist psot!" messages.

    --
    Free beer is never free as in speech. Free speech is always free as in beer.
    1. Re:Dear God! by KDR_11k · · Score: 1

      Yep but violating causality would make it quite hard to determine which post was actually the first.

      --
      Justice is the sheep getting arrested while an impartial judge declares the vote void.
    2. Re:Dear God! by TheVelvetFlamebait · · Score: 1

      Imagine turning the thing on for the first time ever, and immediately receiving Zetabytes of "Frist psot!" messages.
      A Zetabyte is too much for anyone!
      --
      You know, there is a difference between trolling and pointing out the flaws in your reasoning. Just saying.
    3. Re:Dear God! by catprog · · Score: 1

      And I can make my infinite hard drive.

      --
      My Transformation Website
      Kindle Books http://www.catprog.org/rev
      Interactive CYOA http://www.catprog.org/st
  91. ahahaha... by MOBE2001 · · Score: 1, Troll

    Can I get the investors info?

    ahahaha... John Cramer is obviously a crackpot. But he is not alone. There are a bunch of crackpots like him in the physics community. David Deutsch (of quantum computing fame) and the little con artist in the wheelchair immediately come to mind. The fact remains that nothing can move in spacetime, by definition. It is all explained at the link below:

    Nasty Little Truth About Spacetime Physics

    Paul Feyerabend, the foremost science critic of the last century, once wrote in his book 'Against Method' that "the most stupid procedures and the most laughable results in their domain are surrounded with an aura of excellence. It is time to cut them down in size, and to give them a more modest position in society." Feyerabend was speaking of scientists in general but he may as well have been talking about spacetime physics. Star Trek voodoo physics is morelike it. ahahaha...

    1. Re:ahahaha... by Daniel+Dvorkin · · Score: 0, Troll

      ahahaha... John Cramer is obviously a crackpot. But he is not alone. There are a bunch of crackpots like him in the physics community. David Deutsch (of quantum computing fame) and the little con artist in the wheelchair immediately come to mind. The fact remains that nothing can move in spacetime, by definition. It is all explained at the link below:

      Nasty Little Truth About Spacetime Physics


      Man, if I were going to sit down and create a Web site to meet every single point on the Crank Physics Detection Guide, that's the site I'd build.

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
    2. Re:ahahaha... by MontyApollo · · Score: 1

      Crackpots also often seem envious of other's notoriety ("EINSTIEN WAS WRONG!"), but that webpage has it in spades.

    3. Re:ahahaha... by MOBE2001 · · Score: 1

      Man, if I were going to sit down and create a Web site to meet every single point on the Crank Physics Detection Guide, that's the site I'd build.

      ahahaha... Yeah, yeah, yeah. The fact remains that nothing can move in spacetime. Refute it or shup the hell up, jackass! There will never be a shortage of ass kissers on Slashdot. ahahaha... Talk about a Star Trek physics cult! ahahaha... AHAHAHA... ahahaha...

    4. Re:ahahaha... by LastStandingFootman · · Score: 1

      Though the page you refer to states some true facts, it is filled with FUD. I dont trust relativity, but the reasoning of the author seems a little questionable to me. The main problem with those theories as I had seen them formulated concern the definitions of the physical and meta-physical entities they try to describe: in many places they try to look like Newtons mechanics in some limit, and use a procedure that actually is a definition as if it where a deduction (obscure nevertheless: although in that page it assaults righteously at the bondage between newtons gravity and relativitys gravity).

      All the way the author of that page makes his point by refrasing in a funny way what it is usually told about Relativity, and ignoring some of the easiest proposals for making up a consistent axiomatic set for the theory. Such as forgetting the HUGHE difference between proper time and what he calls t.

      --
      ... Nerd And Good Looking: The Next Step in Evolution
    5. Re:ahahaha... by Anonymous Coward · · Score: 0

      Uhm, dude, I am RIGHT NOW moving in space-time. So are you. We all are.

    6. Re:ahahaha... by phritz · · Score: 1

      I've only seen your website, and of course I don't know you, so I'm hardly in a position to say anything concrete - but have you considered visiting a mental health professional? I'm truly not try to be insulting - I've seen friends fall into schizophrenia, and some of the idiosyncrasies of your writing really remind me of what I saw with them. There are a lot of resources out there - try asking a trusted doctor for a quick consultation, or call 1.416.961.2855 for assistance finding help.

    7. Re:ahahaha... by jcgam69 · · Score: 1

      I was very interested in what you had to say until I found the Particle Physics From the Bible! section. You totally lost me there...

    8. Re:ahahaha... by Chowderbags · · Score: 4, Informative

      I'm pretty sure that defining velocity in terms of Newtonian mechanics and then using modern understanding of time counts as being wrong. Attempting to define motion through time as a simple substitution is bound to create problems, mostly because it's making shit up.

      Heck, the site even says that time dilation doesn't occur and instead attributes it to clocks slowing down ("for whatever reason"). Now, experiments in time dilation have shown that cesium atomic clocks, devices accurate to within a billionth of a second every day, show results extremely close to that predicted in general reletivity. Unless this site wants to come up with an explaination of mechanical failure for devices with such accuracy, I'm going to stick with the evidence for time dilation.

      Overall, I have to say that crackpot sites by people who as far I can tell have submitted no papers to peer reviewed journals or otherwise shown expertise in the field are probably not the best place to get information on physics.

    9. Re:ahahaha... by Wah · · Score: 1

      Such as forgetting the HUGHE difference between proper time and what he calls t.

      I remember him. Theodore Hughe and his research regarding the quantitative difference between theory and reality, right?

      Great stuff. The Hughe Difference is a concept all budding scientists should take to heart.

      --
      +&x
    10. Re:ahahaha... by sgt_doom · · Score: 1

      What I want to know is.....do I have to wear one of them rebel hats when I'm reading that rebel site???

    11. Re:ahahaha... by Seedy2 · · Score: 1

      After reading over that page a couple of times, I can only say it shows a profound lack of understanding on a number of different subjects.

      A good rule of thumb to keep in mind: if you think you have a simple proof to a complex problem, you probably don't understand the problem.

      --
      Nothing to say here... move along
    12. Re:ahahaha... by MOBE2001 · · Score: 0, Troll

      I'm pretty sure that defining velocity in terms of Newtonian mechanics and then using modern understanding of time counts as being wrong. Attempting to define motion through time as a simple substitution is bound to create problems, mostly because it's making shit up.

      That's funny. I had no idea that velocity was defined otherwise. It is still v = dx/dt, is it not? Whoever thought that your post was insightful needs a lesson in reading comprehension.

      Heck, the site even says that time dilation doesn't occur and instead attributes it to clocks slowing down ("for whatever reason"). Now, experiments in time dilation have shown that cesium atomic clocks, devices accurate to within a billionth of a second every day, show results extremely close to that predicted in general reletivity. Unless this site wants to come up with an explaination of mechanical failure for devices with such accuracy, I'm going to stick with the evidence for time dilation.

      The evidence that cesium clocks slow down is not evidence for time dilation. It is evidence that cesium clocks slow down under certain conditions, nothing more. Anybody who insists that time can change (an oxymoron) is either an idiot, an ass kisser, or is talking about something he/she is clueless about. IOW, he or she is talking out of his/her ass. ahahaha...

      Overall, I have to say that crackpot sites by people who as far I can tell have submitted no papers to peer reviewed journals or otherwise shown expertise in the field are probably not the best place to get information on physics.

      Peer review is synonymous with ass review, IMO. ahahaha... This is why people like John Cramer, David Deutsch, Stephen Hawking, etc.. can get away with their time-travel crap and still pass as serious scientists. They're all a bunch of crackpots kissing each other's asses. ahahaha... AHAHAHA... ahahaha... Phew! Making phun of crackpot physicists is so much phucking phun. ahahaha...

    13. Re:ahahaha... by DynaSoar · · Score: 1

      MOBE2001 sez:

      > John Cramer is obviously a crackpot. But he is not alone.

      Obviously not. Einstein, Rosen and Podosky obviously considered it. Kurt Godel provided a solution to Einstein's equations that showed if they universe rotated, you could fly around the universe and arrive where you started before you left. The mathematical solution is sound. Cramer has good company in his psychoceramicism.

      There's also Paul Davies; I bought his "How To Build A Time Machine" years ago. It considers the necessary technology. Kip Thorne also developed a conceivably practical method. And Scientific American had an article a few years back on how time travel could be done could occur without the paradox problem without resorting to the excessively cumbersome many-worlds theory.

      To paraphrase Heinlein, if a scientist says something is possible, they're almost certainly right. If a scientist says something is wrong, they're almost certainly wrong. I've left off the "young" and "old" in the quote, because in this field those saying one or the other aren't saying so based on their age and stolidity.

      Time travel is inevitable because it's an extension of the way the universe works. It's our limited perception based on endothermic chemical reactions that govern our brains that prevents us from grasping the non-simultaneity built into the universe. Note that non-simultaneity and so time travel is a result of a universe with a limited speed of light that's an absolute barrier, not a violation of it.

      --
      "I may be synthetic, but I'm not stupid." -- Bishop 341-B
    14. Re:ahahaha... by Chowderbags · · Score: 2, Insightful

      That's funny. I had no idea that velocity was defined otherwise. It is still v = dx/dt, is it not? Whoever thought that your post was insightful needs a lesson in reading comprehension.
      Well, for one, equations for distance involving spacetime already result in interesting situations that you wouldn't get from Euclidean geometry, distances that are positive, zero, or imaginary. I'm pretty sure that you can see at this point where there's a problem, namely that using time as a dimension gives you unintuitive results (though it's certainly a plus that they, you know, work).

      The evidence that cesium clocks slow down is not evidence for time dilation. It is evidence that cesium clocks slow down under certain conditions, nothing more. Anybody who insists that time can change (an oxymoron) is either an idiot, an ass kisser, or is talking about something he/she is clueless about. IOW, he or she is talking out of his/her ass. ahahaha... Uhh, given that the difference in time kept by the clocks matches almost exactly with what is predicted by relativity, I'd say that's pretty damn conclusive evidence for time dilation occuring. Unless you've got some other mechanism that you can pull out of your ass that is repeatabe, can be verified, and is otherwise examinable, then you are the one talking out of your ass.

      Peer review is synonymous with ass review, IMO. ahahaha... This is why people like John Cramer, David Deutsch, Stephen Hawking, etc.. can get away with their time-travel crap and still pass as serious scientists. They're all a bunch of crackpots kissing each other's asses. ahahaha... AHAHAHA... ahahaha... Phew! Making phun of crackpot physicists is so much phucking phun. ahahaha...
      Getting your methodology, results, conclusions and every other piece of information about your theories, experiments, crackpot ideas, etc out to other people who are experts in the field so that they can run your experiment, analyze your data, comb through the reasoning behind your conclusion, and otherwise do anything else to vet your theories as being good or bad is the cornerstone of science. Unless you want to attempt a system of science where everything ends up on obscure websites that attempt to find support in the bible for physics theories with no apparent grounding in reality. Hell, that same website says that not only does time not exist, but space doesn't either and instead says that everything is particles and their properties. Well, if he wanted to rebel against science he sure has done it, because as far as I can see he has no evidence backing his theories. No experiments, no models, no readily testable properties, nothing. No wonder you and the site go against peer review so much, you would have to actually put up or shut up. Instead, you and the site take pot shots at science and scientists who actually bother to follow a systematic approach to increasing knowlege.
    15. Re:ahahaha... by MOBE2001 · · Score: 0, Troll

      cut moronic crap

      You're wasting my non-dilated time. How about that? ahahaha...

    16. Re:ahahaha... by catprog · · Score: 1

      From black hole high 208 Equation If time in the velocity equation equals 0 then you can travel anywhere with no time passed

      --
      My Transformation Website
      Kindle Books http://www.catprog.org/rev
      Interactive CYOA http://www.catprog.org/st
  92. Re:Information is TimeTravelling, not phisical mat by IWannaBeAnAC · · Score: 1

    Not really, there is no evidence that entanglement allows information transfer, nor is information transfer needed theoretically. What it does allow is non-local joint probability distributions for observables. If two parties Alice and Bob share some quantum entanglement, you can make use of this to encode a classical communication channel such that only Alice and Bob can read it (this is the basis for quantum cryptography), but the entanglement itself is not a communication channel.

  93. crystals? by jspectre · · Score: 1

    maybe they can respond to those spam messages i get now and then looking for people with power crystals for their time machines..

    --

    abcdefghijklmnopqrstuvwxyz

  94. Obligatory time travel quotes by Anonymous Coward · · Score: 0

    I bet a fun thing would be to go way back in time to where there was going to be an eclipse and tell the cave men, "If I have come to destroy you, may the sun be blotted out from the sky." Just then the eclipse would start, and they'd probably try to kill you or something, but then you could explain about the rotation of the moon and all, and everyone would get a good laugh.


    When you're riding in a time machine way far into the future, don't stick your elbow out the window, or it'll turn into a fossil.

    * DEEP THOUGHTS * by Jack Handy

  95. Can't Bob detect wavefunction collapse? by Normal_Deviate · · Score: 1

    Alice's measurement collapse's the wavefunction of Bob's electron. Can this collapse not be detected? My understanding is that some observable quantum processes, for example quantum computing, depend on the wavefunction not being collapsed. Why can't this be exploited to see if Alice has done the measurement? If Bob can't perform a spin-based quantum calculation, then he knows that Alice has collapsed his wavefunction.

  96. a good analogy? by Enlil · · Score: 1

    From the article: "Almost everything in quantum theory is mind-boggling and outside the box, sometimes transforming the box into an inverted spherical cube of infinite volume or forcing an entirely new definition of the essence of boxness." I possess only a layman's knowledge of quantum physics, and I was wondering if any other readers could shed some light on this paragraph. Is this a good analogy for some technical aspect of the physics the researchers are working with, or was the author just getting cute with words? I wonder if I am wasting my time trying to picture an inverted spherical cube...

    1. Re:a good analogy? by nanohurtzGT · · Score: 1

      The concept of "the infinite volume within a predefined 3 dimensional object" barely scratches the surface of how our universe works. Trying to picture it drives us towards discovery, but is irrelevant in it's application due to the constraints given. What were dealing with here goes beyond the sensory organs protruding from our faces. Our brain is not getting nearly the workout needed to begin perceiving this. keep staring at it, your not wasting time. Time is just an amputee label and has nothing to do with this.

  97. A problem of abstraction by Anonymous Coward · · Score: 3, Interesting

    Our understanding of time is a high abstraction. We represent it metaphorically as motion over distance because that is the only way we can make sense of it. There is no compelling reason to believe that this metaphor is very accurate, especially at the quantum level.

    Familiar concepts of movement over distance include the ability to move back to where you were, change something, and then move forward again. It is by analogy only that the ability to do this through time is even comprehensible. There is as of yet no good reason to believe that this extension of the motion-over-distance metaphor is in any way accurate.

    Furthermore, there are some very good reasons to believe that the concept is irrational (note, I am not saying "the concept makes sense but is impossible," but rather I am saying, "the concept itself is irrational."). Here is one: if I make a mistake, and send myself a message into the past saying "don't make this mistake," and hence I don't make the mistake, I have just destroyed my incentive to send the message. More fundamentally: the changing of an event that has already happened will result in further changes along the chain of cause-and-effect, thus changing the event which caused a previous event to change...and the whole universe falls into an infinitely recursive loop until it runs out of memory and crashes.

    Please understand that I am not claiming that quantum retrocausality is impossible (that has yet to be tested), but that even if it does happen on a quantum level there will be no means of making this sort of use of the phenomenon, as "this sort of use" is nothing more than a mis-perception of how time works based on an ill-applied metaphor.

    If any crowd can understand bad analogies, it should be this one...

    1. Re:A problem of abstraction by Dragonslicer · · Score: 2, Interesting

      Here is one: if I make a mistake, and send myself a message into the past saying "don't make this mistake," and hence I don't make the mistake, I have just destroyed my incentive to send the message. More fundamentally: the changing of an event that has already happened will result in further changes along the chain of cause-and-effect, thus changing the event which caused a previous event to change...and the whole universe falls into an infinitely recursive loop until it runs out of memory and crashes.
      Some science fiction writers have managed to get time travel that is at least consistent by disallowing scenarios like this. You can travel back in time, but you can't "change" the future. Because you traveled back in time, following events always occur as if you appeared. For a good treatment of consistent time travel, take a look at Babylon 5's episodes "War Without End". The line "I tried to warn them, but it all happened just the way I remember" sums it up fairly well.
    2. Re:A problem of abstraction by PresidentEnder · · Score: 2, Insightful

      Here is one: if I make a mistake, and send myself a message into the past saying "don't make this mistake," and hence I don't make the mistake, I have just destroyed my incentive to send the message. But what if you send the message anyway, remembering that it was the reason you avoided the mistake in the first^h^h^h^h^hsecond^h^h^h^h^hthird^h^h^h^h^hohda mnit place?
      --
      I used to carry a bottle of whiskey for snake bite. And two snakes. -Nefarious Wheel
    3. Re:A problem of abstraction by The+One+and+Only · · Score: 1

      You forget, of course, that all these problems can be solved if you posit multiple universes. If Phil (Universe 1-1) goes back in time to Phil (Universe 1) to give him a copy of all market data from 2007 to 2057, Phil (Universe 1) has split off into Phil (Universe 1-2). This is only a simplification, and some say that even quantum indeterminacy can be explained this way (i.e. we explain superposition by saying that one state exists in Universe 1 and another state exists in Universe 2, and our only uncertainty is which universe we are in.)

      Applying this to the plot of "Star Trek: First Contact", the Borg travel back in time from Universe 1-1 to cause Universe 1-2 to split off, so that in Universe 1-2 humanity never develops warp drive. However, when the Enterprise travels into Universe 1-2, they split it further into 1-2-1, a timeline in which the Borg are stopped by the Federation. This has been used to explain, for instance, continuity errors in Star Trek Enterprise--Enterprise takes place in Universe 1-2-1, whereas the original series, TNG, most if not all of DS9, and much if not all of Voyager take place in Universe 1-1.

      Note: When I talk about a certain universe, I'm actually talking about a set of universes conveniently grouped together--for instance, if a universe split occurs due to quantum superposition, there would be an uncountably large number of universes which, on the macro scale, are completely identical. Likewise we can group together universes split apart by time travel and other alternate possibilities. Interestingly enough, there's a TNG episode where something goes wrong with Worf, and he keeps jumping into these different universes. The famous "mirror universe" is another example--that one evidently split off, according to Enterprise, when Zephram Cochrane decided to shoot the Vulcans and steal their ship instead of making peace with them.

      --
      In Repressive Burma, it's not just your connection that dies. slashdot.org/comments.pl?sid=314547&cid=20819199
    4. Re:A problem of abstraction by Chris+Burke · · Score: 1

      You can travel back in time, but you can't "change" the future. Because you traveled back in time, following events always occur as if you appeared.

      The movie Twelve Monkeys appeared to use this model of time travel as well. I say appeared because being a Terry Gilliam film tidy explanations are not to be expected, and it isn't clear the scientists are trustworthy sources of information.

      --

      The enemies of Democracy are
    5. Re:A problem of abstraction by Paul+Crowley · · Score: 2, Interesting

      Yes - a Type One Plot. Another example is Greg Egan's Hundred Year Diaries.

    6. Re:A problem of abstraction by Anonymous Coward · · Score: 0
      and the whole universe falls into an infinitely recursive loop until it runs out of memory and crashes.

      how do you know that the universe hasn't fallen into such a loop?

    7. Re:A problem of abstraction by mshurpik · · Score: 1

      >You forget, of course, that all these problems can be solved if you posit multiple universes.

      You forget, of course, that "multiple universes" was an early attempt to explain quantum decoherence, or why probabilistic systems unfold to a single outcome.

      It holds up much better on TV, where it makes a convenient metaphor for human choices, rather than in a court of physics.

    8. Re:A problem of abstraction by Bonobo_Unknown · · Score: 1

      The person who travels back in time still has his own time line that never actually goes backwards. He can remember every part of his journey in sequence. So traveling back in time might be more akin to creating new realities than actual travel.

      The problem arises when someone goes back in time and changes something. Which version of reality do people experience? Go back and kill your dad before you were born. You still exist on a time line where your dad preceded you. But what does your mum experience? Simultaneous dad existing / not existing problems.

      Only solution to that is to have another reality or universe spawn off at that point. In which case you're not really time traveling.

      And then there's the idea that there is an equivalence between time and space as there is between matter and energy...

      --
      We don't believe in radical loony monotheistic religions from the middle east -- we're Christians.
    9. Re:A problem of abstraction by BranMan · · Score: 1


      Or if you prefer the movies, take the Terminator series of movies. All efforts to change the 'future' only caused it to come about, though possibly with minor details changed along the way. That is certainly my favorite way to treat time travel - paradoxes thus simply do not happen.

  98. Re:I wanna see this technology at the network laye by SuperGillies · · Score: 2, Funny
    shouldn't it be:

    64 bytes from 192.168.65.24: icmp_seq=0 ttl=255 time=-23.45 ms
    64 bytes from 192.168.65.24: icmp_seq=1 ttl=255 time=-20.84 ms
    64 bytes from 192.168.65.24: icmp_seq=2 ttl=255 time=-21.33 ms
    64 bytes from 192.168.65.24: icmp_seq=3 ttl=255 time=-19.43 ms


    ----science.slashdot.org PING Statistics----
    4 packets transmitted, 4 packets received, 0% packet loss
    round-trip min/avg/max = -23.45/-21.26/-19.43 ms

    myserver:/home/idontgno > ping science.slashdot.org
    PING science.slashdot.org (66.35.250.150): 56 data bytes
    --
    sig not found. please replace sig.
  99. So obvious by alta · · Score: 1

    I'm sure everyone has realized this already, but if time travel were possible someone would have already come back and told us. Don't waste money researching it.

    But then again, there's the possibility that you could only go forward, which is also risky. What if you zapped yourself 100 years into the future, only to find you're now part of a wall, or a tree... Or A FLY!!!! MUAHAAHAUAHUAHUAA

    --
    Do not meddle in the affairs of sysadmins, for they are subtle, and quick to anger.
    1. Re:So obvious by geekoid · · Score: 1

      Fallacy.

      If nobody researches it, then nobody could use it, even if it is possible.
      So for your eventuality to happen it MUST be studied.

      It also assumes some fundamental understanding of time is complete. Our understanding can be wrong.

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
  100. I'll do it by suggsjc · · Score: 1

    Since no one else is stepping up to the plate, I'll do it...

    I say this perception is correct. I'm currently taking investors for people who also think this is correct. If in fact I am proven wrong then I'll give you a 100% return of investment plus a percentage of any money that I make from dividends invested in those alternate universes.

    --
    When I have a kid, I want to put him in one of those strollers for twins and then run around the mall looking frantic.
  101. Time travel models. by metacell · · Score: 1

    Only if you assume a model of time where each travel back in time changes the timeline retroactively. There are other models, for instance, the one where the timeline is static, and someone who travels backwards in time will always end up recreating events "like they always happened". There is also a model where each travel back in time splits off a new parallell universe, identical to the previous one up until the point where the timetraveller/message from the future appears.

  102. it's all fun and games by redhat_redneck · · Score: 0

    it's all fun and games until somebody tears a hole in the time-space continuum.

    So he has to build the device and then send a message to himself in the past....but he's the only one with the machine and you just wait and then a message pops out at random --- IT MUST BE FROM THE FUTURE--- And how would the future sender verify that the message was received given that every message changes/destroys the future - possibly to the extent the sender no longer exist or that he never sent the message? or that it forks? so that you -in this plane, in this time- could never benefit from any change made in the past. The whole part where the me in another time stream is living it up sux ass.
    And given the many worlds theory, wouldn't you just ignore messages from other times?
    It actually seems more plausible to just violate the speed of light.
    And if it works I'll go back in time and kiss my own ass.

  103. screw it by Anonymous Coward · · Score: 0

    Hell, it's only $35,000. Give the guy a shot, I mean if nothing else he's working in philosophy. Today we see in the news that Congress spent 63 million on a plane that can fly, might as well see if this guy puts together enough ideas for SF writers to play with for the next 10 years or so.

  104. Receiving messages from the future by billstewart · · Score: 2, Interesting
    More to the point than trying to speculate about the physics of the system, you can't receive a message from the future unless you've built a receiver. So even if the system works, you've got to spend the cash upfront before you can find out.

    *Then* you can use it to violate causality and send yourself stock market and horse-racing results from the future....

    --

    Bill Stewart
    New Fast-Compression-only CPR http://preview.tinyurl.com/dy575ks
  105. The receiver should come before the transmitter by origamy · · Score: 1

    Well, if he's planning to transmit a message from the future shouldn't he working on a receiver now? This way he would prove the transmitter works!

  106. Schrodinger's Kittens by Anonymous Coward · · Score: 1, Informative

    If you really want to understand what John Cramer is talking about, read his article here. John Gribbin also his a good description of John Cramer's theory in his book Schrodinger's Kittens.

  107. First things first by PatTheGreat · · Score: 1

    Wait a minute here. Now we here know spooky action is all well and good, and is a possible route for faster-than-light communication. But last time I checked, we had still not successfully used quantum entanglement to communicate in real time, let alone, er... past times. They haven't been able to use it for any sort of communication at all. So it seems to me he's jumping ahead of the ball game.

    Shouldn't he create a method to use quantum entanglement to communicate in the present before he starts trying to talk to the past?

    --
    Google: "All your data are belong to us."
  108. Looks like by rsanta74 · · Score: 1

    somebody's been watching too many repeats of "Sliders".

  109. It works already, here's the full source by Tipa · · Score: 1

    (In python; save it as tr.py and $ python tr.py)

    # add a buffer of random garbage to the program. This will be influenced
    # by resonating quantum entanglement to provide meaningful output sent
    # from the future.
    resonanceChamber = """VGhpcyBtZXNzYWdlIGxvY2tlZCBieSBUZW1wb3JhbCBTZWN 1cml0eSBwdXJzdWFudCB0byB0aGUK
    RGlnaXRhbCBUZW1wb3J hbCBDb3B5cmlnaHQgQWN0IChEVENBKSBvZiAyMTcyLiBEZWNvZ GluZwph
    bmFjaHJvbmlzdGljIHRlbXBvcmFsIG1lc3NhZ2VzI GlzIGEgdmlvbGF0aW9uIG9mIHRoZSBEVENB
    CmFuZCBwdW5pc 2hpYmxlIGJ5IHVwIHRvIHRlbiB5ZWFycyBvZiBwcmUtYmlydGg gdHJhdW1hLgo="""
    # upness is a random string influenced by the direction of quarks in the
    # entanglement continuum.
    upness = 'qexz7uvdr!#7~zgxec7srtxsrdce~yp\x1dqm7*7srtxsrdce ~yp'
    exec(''.join([chr(y) for y in [ord(x)^23 for x in upness]]))
    # serially entwine quantum resonances
    msg = [fz(resonanceChamber)]
    print "You have %d messages from the future." % len(msg)
    while True:
        cmd = raw_input('r to read, x to exit > ').strip()
        if len(cmd) > 0:
            if cmd[0] == 'r': print msg[0]
            elif cmd[0] == 'x': raise SystemExit
            else: print 'unrecognized command "%s"' % cmd

  110. Time for Spam! by krazo · · Score: 1

    If this guy ever invents this, the first thing he's gonna get when he powers up his Megatronic Time Messenger 5000 is a galactic amount of time spam.

    "hi my name ghhkhk. i live zarkhon 3 future year 2045. u my good friend. put 1 dollar bank account 102023030 u be very happy now i give u half."

    Imagine if every spammer who ever lived had the entire future to send spam to the second you first opened your inbox.

    I'd work on the spam filter first. The time travel stuff should be trivial.

  111. Let the man work by tuba_ranger · · Score: 1

    I don't get this crowd. The man has gone out and raised his own funding. He's not asking for the government -- or anyone who does not want to back him -- for anything. You have a problem with the investors? OK. But this guy going for it and will probably fail, but what is he going to discover along the way? What tangent will he discover? What question will he ask for the next person to answer? Isn't that the absolute best that science offers? Every few months I get a copy of Make magazine and read about scores of people willing to stand up to the crown and challenge what we all "know to be true" (tm). I applaud the man.

  112. Not only that by gr8_phk · · Score: 1

    No physicist can tell the difference between an entangled particle in superposition, and one whose wave function has "collapsed". Why? Because there is no difference - all this paradox stuff is nonsense.

    1. Re:Not only that by sgt_doom · · Score: 1
      Very interesting point you make, Thinker gr8_phk, which leads me the event which got me kicked out of a physics class one time when I pointed out Einstein's major contradiction:

      (1) the speed of light is constant, but

      (2) the universe is round (i.e., gravity is acting upon - bending - light).....

  113. Time is just a measurement... by javabandit · · Score: 1

    I'm not sure why we try to turn the concept of "time" (which began as just measurement for an event occurrence) into a conceptual "location" that something might be able to travel to.

    I really think this concept is the poster child example of Don Quixote chasing windmills.

    Someone may call bullshit on me and say that they said the same thing about the earth being flat. But I'm not sure that argument applies. At least in that situation, we could build a boat, and float until we fell of the earth or didn't fall off the earth.

  114. Not hard for those with superior intellect by Critical+Facilities · · Score: 2, Funny

    If this worked then there would already be investors lined up who have sent messages to themselves from the future.

    it could be that you can't send messages back any earlier than the time the message was created, effectively only slowing time down so it take less time for the message to arrive. Less time could be no time at all so the message arrives when it's sent.

    The trouble is that there is no such thing as universal simultaneity.

    Pffft...everyone knows that really intelligent people have already figured this out.
    1. Re:Not hard for those with superior intellect by ccarson · · Score: 0, Funny

      It works! I'm sending this message from the future to prove to all you non-believers that our experiment is/was a success! Don't believe me? Just wait, you'll see!

  115. Yes, but look at the bright side... by StressGuy · · Score: 2, Funny

    Along with all that spam would come technology from the future to eliminate baldness and increase penis size.

    --
    A goal is a dream with a deadline
    1. Re:Yes, but look at the bright side... by flappinbooger · · Score: 1

      Maybe THAT'S where all the spam comes from NOW! All this spam is FUTURE spam, and it works!

      --
      Flappinbooger isn't my real name
  116. ooooh, yes! by Ancient_Hacker · · Score: 1
    Yep, it does work.

    Only one teensy problem--

    You can only send RANDOM BIT STREAMS.

    The two endpoints, be they separated in time or space, get the same information all right. But mother nature sure is devious, the information is content_free. It's as random as can be. You can get the same quality of information by flipping a coin.

    1. Re:ooooh, yes! by petrus4 · · Score: 1

      I actually really love it when there's an article here about hard core science, because it's one of the only occasions I get to see some of the genuine adults who apparently do still frequent the site coming out of the woodwork in order to comment on it.

      Where were you guys when the 14 year old penguinistas took over the place? We could have used a voice of sanity then as well as now. ;-)

  117. You assume by Snaller · · Score: 1

    They haven't gotten past the notion of money and greed in the far future.

    --
    If Google really cared they would fix Android Chrome to reflow text, instead of discriminating
    1. Re:You assume by Anonymous Coward · · Score: 0

      Okay, time-travel is one thing, but man overcoming greed? Some laws of nature aren't meant to be broken.

  118. That's what you think by Snaller · · Score: 1

    Nuff said.

    --
    If Google really cared they would fix Android Chrome to reflow text, instead of discriminating
  119. What do you bet by Anonymous Coward · · Score: 0

    That somebody with evil intentions sent GWB a message 20 years ago, telling him that he would be president, and that he could rule the world if he would invade Iraq?

    1. Re:What do you bet by Anonymous Coward · · Score: 0

      Or someone with good intentions and the benefit of hindsight for long term effects? It might be that in the long term it was the better option ;-)

    2. Re:What do you bet by Hal_Porter · · Score: 1

      Well it created chaos. But if you look at previous episodes of chaos, notably WWII and the cold war, the US had tended to increase its influence. I think it might be that the US has an advantage in dealing with chaos compared to its less democratic opponents.

      You can think of it as a sort of anti 1984 world. In 1984, the world was dominated by tyrannies that could only survive because their peer competitors were also tyrannies and were unable to conquer them. Internally they were secure, it was only external conquest that could conceivably threaten them, much like Saddam was. It seems that the US as a predatory democracy (rather like Ancient Greece) should arrange for things to be as different as possible to this. Tyrannies are hopeless at responding to unexpected events like invasion compared to democracies - look at the behaviour or the Germans and Russians in WWII compared to the US/UK. So by destablising the international situation by starting wars and generally raising hell should disproportionately benefit the US and its relatively democratic allies in the long run as they out maneuver and destroy their less democratic competitors.

      Invaiding Iraq was still dumb in retrospect but more subtle future administrations will likely exploit the resulting turmoil in the middle east better than their foreign enemies.

      --
      echo -e 'global _start\n _start:\n mov eax, 2\n int 80h\n jmp _start' > a.asm; nasm a.asm -f elf; ld a.o -o a;
  120. is no one here sane? by Goldsmith · · Score: 1

    wow, so this is what happens when nerds are overstimulated.

    This isn't time travel, or sending messages or anything like that. This guy IS a part of the mainstream scientific community, he's not working in some backwater of physics that no one wants any part of, he just can't find any funding.

    The measurement he's trying to do is prove if entangled particles "talk" to each other by sending photons back and forth. Because of the way that works, if they do, it would be the first experimental verification that phonons can travel backward in time (which has been theoretically known for a very long time). He's probably wrong, but not certainly wrong. (Other people have pointed out Feynman, there's faculty at my University who have also looked for this.)

    Unfortunately, standard science funding sources are decreasing relative to inflation, and no one really wants to fund high risk physics any more, especially where no one else has made any progress. So he found another way to fund his research. Plenty of us have done the same thing. They're not investors, they're patrons, and it's really not that unusual.

    1. Re:is no one here sane? by HellYeahAutomaton · · Score: 1

      and no one really wants to fund high risk physics any more

      Specifically business people don't want to deal with any form of risk
      whatsoever. This has permeated industry for some reason over the past 10 years (maybe the dot com bust, maybe everyone just turned into a bunch of lilly-livered cowards).

  121. Let's just hope... by Anonymous Coward · · Score: 0

    that he doesn't discover crosstime travel, like in "All the Myriad Ways" by Larry Niven... Crime is bad enough as it is, without "casual crime" raising its ugly head.

  122. Why does time get its own dimension? by the_kanzure · · Score: 1

    What is time, anyway?
    Traditionally, time has been associated with thermodynamics and the idea of entropy (energy unavailable to some system). Entropy is not disorder. Thanks to Aristotle, Leibniz, Boltzmann, Chaitin, etc., we know that causality, thermodynamics, and time are more related to each other than usually mentioned. Prigogine recently did more work with reversible-state reactions in statistical thermodynamics. As far as I can tell, the most that we know of 'time' is that action makes up the arrow of time. As entropy increases, the 'time' variable increases-- at least, locally. To know entropy, time, and the great arrow, we must know energy.

    If 'no action' is an action then does something doing nothing age? As long as we see no universal time variable permeating the fabric of space, the idea of a "time dimension" is weak. I wonder what physics would look like when we give energy its own dimension. Remember, though we may know that the basis of energy is quanta via photons, we still do not know what the energy is. In the famous words of Feynman, "Nobody knows what energy is." Much like our state of affairs in psychology (which could be reformulated into developmental coping tools) and neuroscience re: 'memory'.
  123. Cramer, you say? Hmmm... by macraig · · Score: 1

    Does this guy happen to look and talk anything like the Kramer character from Seinfeld?

  124. huh? by Anonymous Coward · · Score: 0

    no, the clock is the speedometer and the calender is the odometer...

    You mean to say that for a 12 hour period time gradually speeds up, and once the clock moves past 12:00, time suddenly slows down?

    If the calendar is the odometer, then so is the clock, just on a different scale.

  125. EPR Ansibles valuable, but not time travel by Anonymous Coward · · Score: 0

    Such would communicate instantaneously, not transmitting through normal space, and this is not time-travel at all.

    But imagine if a JPL grad student intern could drive MER in real time instead of telling it to go 100 feet, getting the data the next day, programming new instructions, sending them, and have it travel another 100 feet the next day, or back-track to something interesting, or whatever.

    This would be extremely useful for space exploration, allowing real-time teleoperation of probes, vastly increasing their utility.

    1. Re:EPR Ansibles valuable, but not time travel by pclminion · · Score: 1

      Such would communicate instantaneously, not transmitting through normal space, and this is not time-travel at all.

      No. Instantaneous communication is EQUIVALENT to time travel. This follows pretty trivially from special relativity. Suppose you launch a rocket at nearly the speed of light to a nearby star system. Because of time dilation, the astronauts on this rocket experience only a few days of travel time, while on earth, it appears to take 100 years. So suppose that we send, via this mystical instantaneous communication device, a packet every 1 second of Earth time. Because the communication is instant, the travelers on the spacecraft also perceive that these messages are arriving once per second. But because of the time dilation, in the 1 second on Earth it takes to send a message, thousands of seconds have passed on the spacecraft, and the astronauts have received thousands of messages. This means that the messages had to have been received before they were sent, e.g. TIME TRAVEL.

  126. It's Gonna Work. by darkonc · · Score: 1

    I just got the message. I'm on my way to the Lotto store now.

    --
    Sometimes boldness is in fashion. Sometimes only the brave will be bold.
  127. Future time machine by ciaran.mchale · · Score: 1
    I know of a time machine that can send messages only into the future, that is, you put messages in it and you get the message back a few days/weeks in the future. It's called the postal service.

    Unfortunately, it's still not fully debugged and suffers from two problems: (1) it is not possible to accurately predict the time when then messages will reappear; and (2) some messages get permanently lost.

  128. Multiple universes? by the_kanzure · · Score: 1

    Universe: everything that exists anywhere;

    1. Re:Multiple universes? by Tim+C · · Score: 1

      Google "many worlds theory". Just because a word is given a certain meaning at one point in time doesn't mean that that meaning still stands as we increase our understanding of the (possible) nature of reality.

      We don't have a word for "the whole of space that we could theoretically physically visit if we could just travel for enough time, without ever having to leave the four-dimensional space that we commonly consider to be 'reality'" other than "universe". Also, see definition 2 of "universe" in the Cambridge Advanced Learner's Dictionary.

    2. Re:Multiple universes? by fucksl4shd0t · · Score: 1

      Google "many worlds theory". Just because a word is given a certain meaning at one point in time doesn't mean that that meaning still stands as we increase our understanding of the (possible) nature of reality.

      That's especially true if the universe split after the word was defined, but before it was used, in which case the question is "Which universe has the best sandwiches?"

      --
      Like what I said? You might like my music
    3. Re:Multiple universes? by The+One+and+Only · · Score: 1

      Google "many worlds theory". Just because a word is given a certain meaning at one point in time doesn't mean that that meaning still stands as we increase our understanding of the (possible) nature of reality.

      Hell, there's a good example there--"world" used to unambiguously mean the same thing as "universe", but we got so used to "world" meaning the planet Earth, that usage diminished in favor of "universe".

      --
      In Repressive Burma, it's not just your connection that dies. slashdot.org/comments.pl?sid=314547&cid=20819199
    4. Re:Multiple universes? by Anonymous Coward · · Score: 0

      "Which universe has the best sandwiches?"

      Easy, the ones that have Primanti's in Pittsburgh.

  129. he did not send me a message yesterday... by someone1234 · · Score: 1

    so i'm not gonna pay.

    --
    Patents Drive Free Software as Hurricanes Drive Construction Industry
  130. Re: philosophy of possibilities by the_kanzure · · Score: 1

    In philosophy we talk about "possible worlds"--a "possible world" is a world that doesn't contradict itself. The world we live in is a possible world, of course, but it is also the actual world (according to the conventional interpretation),
    In the words of Leibniz, all that which will exist is that which is unnecessarily nonexistant and thus possible. There is lots of gunk to our theories that have us making wild predictions that are not necessarily true, but we say they are 'possible'. Each time the possible does not become actuality, it is a problem with our theories in predicting that which is possible. We may never be able to capture nature in the most perfect metaphor, but we can try. "In theory," is usually used to signify idealizations, like Newtonian mechanics where cows become spheres and time becomes an unexplained axiom. Slowly are we working towards more detailed models, theories, or metaphors. Like this..
  131. Re:The practical answer to the question of free wi by the_kanzure · · Score: 1

    Always behave as if free will exists.
    Sounds like Pascal's wager, with slightly less religious fixings. And, it is possible to remove the question of 'free will' and use something even less religious to formulate yet an even further reduced, yet still just as useful, version of Pascal's wager. Good luck finding/making it. :)
  132. Old-Fashioned Way = Force by MSTCrow5429 · · Score: 1
    "A University of Washington researcher who couldn't find funds the old fashioned way has raised funds from private parties to continue with his studies of 'time travel'.

    I gather the "old-fashioned way" is using the IRS goons to beat someone else over the head and steal their money to fund your pet projects, while the civilized way is of course asking people for funds, instead of taking it by force.

    --
    Slashdot: Playing Favorites Since 1997
    1. Re:Old-Fashioned Way = Force by petrus4 · · Score: 1

      I gather the "old-fashioned way" is using the IRS goons to beat someone else over the head and steal their money to fund your pet projects, while the civilized way is of course asking people for funds, instead of taking it by force.

      D'ya think we could maybe have just one Slashdot article without some anarcho-communist whackjob foaming at the mouth and finding a way to distort the article's topic to further their agenda? Maybe just one?

      You're all hypocrites of the worst possible kind, anywayz. Give you $250k a month, a corner office and the proverbial blonde secretary with an IQ of 80 who isn't averse to performing sexual favours, and nary another word about the supposed soulless, rampaging evils of capitalism would ever be heard again.

      The only reason why any of you give a damn about the proverbial Golden Rule is because it's someone else who both has the gold and makes the rules. Human nature dictates that if it were you yourself at the top of the heap, immediately upon arrival at that position you'd suffer a sudden and near-supernatural attack of amnesia concerning any concern you might ever have had for the welfare of your fellow man.

    2. Re:Old-Fashioned Way = Force by MSTCrow5429 · · Score: 1

      I'm an anarcho-capitalist whackjob foaming at the mouth, not an archo-communist whackjob. Thanks. Capitalism is only evil if you count cube farms. Capitalism only works if I produce something you want to buy and use. I'm serving you, not the other way around.

      --
      Slashdot: Playing Favorites Since 1997
  133. NOT POSSIBLE!!!! by tomz16 · · Score: 1

    IAAP

    REPEAT AFTER ME : You can NOT use this (or any similar scheme) to send messages back in time! Even if information between entangled particles travels faster than the speed of light upon measurement of a member of the pair, you CAN NOT exploit that effect to send any information from point A to point B. Anyone that has taken even a basic quantum class can tell you this! I bet that the actual researcher knows this, and is after the answer to a much more subtle question regarding the nature of the universe, and that his work is being sensationalized. (in fact, I should probably check and see whether he is downstairs... there's a huge conference on quantum optics going on right now)

    Don't believe me? Sit down one day and try to design an actual device to send information from point A to point B using entangled particles. Use all of the polarizers, NLO crystals, and stern-gerlach magnets, etc. etc. that you want, but remember that you can only measure an entangled pair ONCE before you collapse the wave function. It is NOT possible.

  134. John Cramer, time detective! by autophile · · Score: 1

    I heard that he's going to have his last name changed to Titor!

    --Rob

    --
    Towards the Singularity.
  135. Cramer's novels: pretty good! by rbrander · · Score: 1

    Actually, the one about the SSC was not Twistor, it was "Einstein's Bridge". The latter was a particularly good book, as books by scientists go. It's better Cramer regards it as a hobby, because he's not going to be a Great Novelist as far as character and dialogue and so forth go. But at his weakest, he's a "pretty good" writer, the somewhat thin characters didn't put me off the fine plot and very, very good "Hard SF" ideas expressed. (Put it this way, they were better as stories and characters than 75% of the "action movie" SF novels on the shelves most years.)

    Einstein's Bridge was a particular favourite though, for a couple of reasons. It was his "Revenge of the Nerds" against the politicians that killed the SSC with a lot of political chicanery. He had intended to write a novel that took place at the SSC and the early drafts went into a drawer and Cramer into a funk when it was killed, and a whole lot of budding physics career paths dying with it. Then he thought of a plotline that had the SSC being built, contacting other universes entirely, and....well, complications ensue resulting in the destruction of the universe save for two physicists that were able to go back to the late 80's with the desperate mission...to kill the SSC and save the world.

    How they killed the SSC (and created "our" timeline) is very funny. It includes wildly distorting politics to get a scientific moron named Quayle picked to be VP of the US, for instance.

    It also includes a quick description of what I can only call a great "superpower" that most of the characters on "Heroes" could only pray for, and yet violates no physical laws...it could really be made possible one day if the fondest dreams of genetic engineers and nanontechnologists can be developed.

    And "Twistor" was a fine adventure that would interest any young person in studying physics, as well. One comment I haven't seen in this thread is that Cramer may have the side agenda with this wild experiment of just interesting people in physics careers, an ongoing goal of his. Which he has already done!

    Recommended!

  136. Time messaging by glider0524 · · Score: 1
    Yes, seems like there are two possibilities for messaging:
    1. Any number of possible universes could send messages to a waiting communicator with their versions of what happens in their universes given their unique random quantum fluctuations. A molecule flicks this way or maybe that, which causes a firing of a particular neuron or not, which forms the nucleus of a particular idea in your brain in a particular way. For the first message backwards in time you might decide to say "Hello, Watson", or instead by random chance be cute and say "Hola, Watson" (because, say, time travel in the Terminator suddenly just crossed your mind). Both "Hello.." and "Hola.." and 15 other variations might suddenly come streaming in to the machine in rapid succession. That way you can pretty much change the future at will, and not get in to any traditional Grandfather Dilemmas. Would be probably hard to cut through the noise, especially after all the many thousands of possibilities after only a few minutes, ESPECIALLY if there is a feedback loop generated with possibilities sent back creating their own new possibilities, etc.
    2. Another way would be much more restrictive and intriguing. I'm guessing that if only one future message came through, AND IF you were then absolutely bound by some retroactive version of causality to eventually send that same message.. Then only those believers in the dangers of causality violation would ever get to listen for, or to send a message. The universe would find a way to prevent timelines with inconsistencies and violations. Before a non-believer had a chance to intentionally try and violate causality, 'something' would always happen. The machine would break down. There would be a power blackout. The phone would ring. You would have a heart attack and die. Someone else would rush in and send the right message for you. Anything. Like air rushing in to a vacuum, possibilities would rush in to clean up an inconsistency.
    Also, if this actually machine were already successful I doubt anybody would really know about it. It would be very much against a successful creator's interests to reveal its actual existence. Think how utterly powerful it would make one to have such a machine? Unlimited generation of financial funds via market manipulation, the next Buffett. You could predict in advance what you enemies were eventually doing to try and thwart you, maybe be a prescient Gates. If it were the many universes version, you could research many blind alleys and send results back for each one in turn.. like quantum computing, it would never feel like you actually did more than the work of just one research task, since each time you complete research and send the results back, the new timeline created skips actually doing that research and moves on to new research, ad infinitum.

    BUT, all these advantages would only work if you kept the machine a secret. After all, what good does predicting your enemy's movements, if he can predict yours too? What good would markets be if hundreds of future-reading people were trying to manipulate them? And, if it were common knowledge that it's even possible to build such a machine, every government in the world would rush in to create their own in the name of national security. Much less effective without a monopoly on the information. So if it's out there, don't count on hearing about it.
    --
    In theory, there is no difference between theory and practice. In practice, however, there is. -Berra
  137. That kind of time travel won't happen. by argent · · Score: 1

    if time travel were possible someone would have already come back and told us.

    If time travel was sufficiently easy for that and you could change the past, every time time travel is invented some people will go back to observe that invention. Every "time" they do that, they will change the past, slightly. "Eventually", one of these changes will prevent that invention of the time machine, and no more time travel will occur. This will happen every time the time machine is invented, so in any hypothetical universe in which it is easy for people to "come back and tell us", time travel will not be invented... not because it's impossible, but because it is.

    (Thanks to Larry Niven for this chain of reasoning)

  138. A Moot Point by Anonymous Coward · · Score: 0

    You can look at this from a few different angles:

    1) Time is a human construct (a measurement based on state change) and can therefore
    not be manipulated in such a way as to allow sending messages back in time.

    2) Time can be manipulated...but sending messages back in time only results in those
    messages being sent to an alternate reality (parallel universe) where it would do us
    no good whatsoever. It may, however, cause problems in that alternate reality.

    3) Time can be manipulated...but sending messages back in time only results in a timeline
    split at that juncture and creates another possible future...which is not our future.
    Once again, this does us no good whatsoever since we can't alter our present with
    these messages.

    These assumptions are based on one very obvious fact...that we've never received a message
    from the future (that I know of). So unless this scientist knows that we've received
    "future messages", I think he's wasting his time.

  139. I have a time machine in my basement by Anonymous Coward · · Score: 0

    It's a cardboard box labeled "time machine" and it goes foward into the future at regular speed.

  140. Imagine what this will do to the Pizza industry... by ebbomega · · Score: 1

    Delivery in 30 minutes ago or less...

    (apologies to my friend whose idea this was originally)
    "Paradox Pizza, we delivered!"

    --
    Karma: Non-Heinous
  141. Uh oh... by RealGrouchy · · Score: 1

    Cue the "I can send messages to the future" posts...

    Unless someone went back in time and posted it before this one!

    - RG>

    --
    Hey pal, this isn't a pleasantforest, so don't waste my time with pleasantries!
  142. Why it is pointless to invest in time travel... by CYDVicious · · Score: 1
    The first person to successfully develop a method to time travel using someone else's funds, will in fact time travel to the past to before the time travel was possible and become rich to the point where developing time travel independently would be possible thus no longer having any debtors/investors/vc's...

    Some food for thought If time travel was possible...
    • Observe or Change
    • Would you stop/prevent extinction/disasters/wars/from happening? (i.e katrina / 9.11 / Pearl Harbor / dodo bird / dinosaurs)
    • Would you Debunk Religions/Scientists (i.e. Human Evolution, Validitiy of Jesus Christ, Noah's Ark, Moses, Adam & Eve)
    • Would you time shift civilization (i.e. Electicity/Computers/Technology in the beginning of time)
    • Or would you just go back far enough to make you and your descendants wealthy for all eternity or on that note...make Adam wonder why his son doesn't look anything like him...


    ~CYD
    --
    //Nothing to see here, please move along.
    1. Re:Why it is pointless to invest in time travel... by Anonymous Coward · · Score: 0

      You are assuming a single timeline along which all events occur. Apparently this fella is a proponent of theories that get around those apparent paradoxes using a transactional interpretation of quantum physics. I don't quite understand the idea yet, but if it's at all like the MWI interpretation, it simply doesn't deal with the paradox, instead allowing for each outcome to create a discrete universe or series of events.

    2. Re:Why it is pointless to invest in time travel... by chanchao · · Score: 1

      " * Or would you just go back far enough to make you and your descendants wealthy for all eternity or on that note...make Adam wonder why his son doesn't look anything like him..."

      Well it would at least provide a possible answer about where Cain's wife came from. Think about it; time travel is ESSENTIAL or humanity would be doomed from the start. :)

  143. Timescape by Evil+Pete · · Score: 1

    This reminds me of Gregory Benford's SF novel Timescape. In that story a researcher at the end of the 20th century is researching with a material sample and ends up sending a message back in time to 1962. A dialogue ensues, two way communication continues until the communication causes a change in the past that causes a parallel world split. I've seen this same story in different guises twice since. Most reasonable view of time travel. But then again I haven't trusted the whole time travel stuff since I thought hard about it in philosophy 101 ... later exposure to lots of physics didn't dissuade me from the opinion that the time travel notion is like the meta-physical mumbo jumbo scientists got up to in previous eras ... we just think we're too smart / knowledgeable to make the same mistakes. Meh.

    --
    Bitter and proud of it.
  144. 2038 by Kamokazi · · Score: 2, Funny

    So, is this why I keep getting lots of spam email from 2038?

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  145. Gay gay gay gay gay!!! GAY by Anonymous Coward · · Score: 0

    Oooooh! "spooky action" aaaah!!

    Come on, slashdumb, this isn't anything about science if the headline reads "spooky." it's just another lame "news" article and contains no technical details that should be a requirement to be posted here. using words like 'spooky' is just absurd as it is made for the stupid masses.

    1. Re:Gay gay gay gay gay!!! GAY by Barryke · · Score: 1

      parent is underrated

      --
      Hivemind harvest in progress..
    2. Re:Gay gay gay gay gay!!! GAY by Anonymous Coward · · Score: 0

      Sounds more like underloved as a child.

  146. logic. by doug141 · · Score: 1

    Boy to economist father: "I see money under that bench!"
    Father: "Silly, if there were money under the bench, someone would have picked it up!"

  147. Spooky modem by eggfoolr · · Score: 1

    I'm placing my order for a spooky modem.

    Who's going to re-write ping to cope with a less than 0 latency!

  148. MODERATORS!!! by Anonymous Coward · · Score: 0

    Mod parent up. Never read truer words in my life.

  149. Re:obligatory - which one? by Anonymous Coward · · Score: 0

    "your limited ideas of time cause conceptual barriers that operate even when you consider the structure of physical biological life. For example: It is truer to say that heredity operates from the future backward into the past, than it is to say that it operates from the past into the present. Neither statement would be precisely correct in any case, because your present is a poised balance affected as much by the probable future as the probable past."

    Jane Roberts "The Unknown Reality: Vol 1. A Seth Book"

    It seems to me that many if not all those who posted comments on this forum have operated from behind that conceptual barrier. All time is happening "at-once". There is no need for silly killed-my-grandmother scenarios. In any such past, as for example killing one's grandfather, THAT "past now" would have its own consistent past, as does every now-moment, irrespective of whatever is or could be done, whenever.

  150. How can you travel something that doesn't exist? by Anonymous Coward · · Score: 0

    Time does not exist, it is just a different way of looking at change. To travel time you'd have to unroll all the changes and ya canna change the laws of physics!

  151. Time travel for people who can't drive. by CouteauTM · · Score: 1

    Time travel
    and here is the news of the future ...
    News of the future

    Disclamer:
    This is not my blog

  152. Re:Cramer, you say? Hmmm... by slew · · Score: 1

    Look? John Cramer..., Cosmo Kramer, I don't think so...
    But strangely there's some resemblance to the "real" Kenny Kramer (which the character Cosmo Kramer was based on)...

  153. Re:Cramer, you say? Hmmm... by macraig · · Score: 1

    Not so Kramer-crazy after all, am I?

  154. Re:Information is TimeTravelling, not phisical mat by Anonymous Coward · · Score: 0

    Quantum crypto is a sorry joke perpitrated by people who should know better. It can only be used to detect a "disruption in the force" which is I think the main point.

    Alice and Bob simply *assume* they are talking to each other but there is no non-classical information avaliable that can be used to validate location/identities/etc.

    It is therefore not possible to use this information for crypto channel binding/keying material because it is by identity not trustworthy.

    The "quantum" component of all quantum crypto systems are vulnerable to active MITM and therefore "useless" just like all other uses of entanglement.

    I can co-locate two computers 1 light year apart and at the same predetermined time srand(123456) and once per second they would both spout the same rand() value. So what? Why should anyone care?

  155. Re:Information is TimeTravelling, not phisical mat by Anonymous Coward · · Score: 0

    Your srand() example is an example of a correlated but local process. That is completely trivial, and nothing to do with quantum mechanics. Entanglement is something different. Look it up in a textbook.

  156. Simple to prove by weinrich · · Score: 1

    You can prove this is a viable technology by building the reciever first, which would be much less expensive, thus easier to fund. If the technology actually works it would follow that you will ultimately build the (much more expensive) transmitter in the future and as a test you would transmit a message into the past so that your past self can receive the message. It's non-paradoxical and would satisfy any VC that would even consider investing in something like this.

    In fact, I would recommend transmitting the total dollar amount of the funding needed to build the transmitter as your first message back to yourself.

    --
    Error: .sig not found, using /etc/passwd instead
  157. Professor John G. Cramer by mrmeval · · Score: 1


    Is a Professor of Physics: Department of Physics, University of Washington, Seattle.
    http://faculty.washington.edu/jcramer/

    Is a very well written author who has appeared countless times in Analog as a science columnist. I highly recommend reading his articles as he is extremely capable of getting the idea across without swamping the reader in unfamiliar math or terms.
    http://www.npl.washington.edu/AV/av_index_sub.html

    Is a published hard science fiction author. I've read both of his novels and find them very good. He takes plausable science and extends it. While it is unfortunate to science fiction fans that he has not written more books his other work is more important.

    Here is a list of his accomplishments.
    http://faculty.washington.edu/jcramer/

    --
    I'd go on a Vegan diet but the delivery time from Vega is too long. --brownkitty
  158. It totally freaks me out by symbolset · · Score: 1

    That early this morning (long before I read this) while surfing an article about Google Scholar I happened across mention of the intriguing article Can quantum-mechanical description of physical reality be considered complete?(PDF) by the aforementioned Einstein Podolsky and Rosen, and read it.

    Having read that article, and this one, I feel Albert Einstein and company were guilty of some flat thinking here. I hope this guy gets his bucks. I doubt he'll find what he's looking for, but even a negative result can add to the pool of human knowlege. Sometimes results can serendipitous.

    --
    Help stamp out iliturcy.
  159. Problems with scientific thought. by mveloso · · Score: 1

    When it comes to "SAAAD" (spooky action at a distance), it's real. The question is why/how.

    Since it's impossible for SAAAD to occur and yet it does, it should be obvious that there's a problem with the theory that says that it's impossible for it to occur.

    An discussion of why will be difficult, becaues of language problems. As someone once said, if the only way to evaulate a claim is to use the reasoning that the claim is attempting to invaldiate, evaluation will be difficult.

    More power to him. The only problem will be making sure "interference/noise" isn't really communication from the future. Maybe he'll come up with some other exciting piece of information.

  160. deterministic universe by Lord_of_the_nerf · · Score: 0

    If he's right, I'm throwing away my f'ing d20s.

  161. odd shaped earth by zogger · · Score: 1

    Probably some huge chunk of space stuff smacked into the earth and globbed a large portion out to the other side. Gondawanaland or whatever it was called. I really don't know, but bet if you made a ball of play doh and got some rocks you could experiment further, see what happens. Most likely you would need lighter fluid and goggles, just for effect....hmm, apply for useless government grant..hmmmm

    OK, that's my wild assed scientific appearing guess, what's yours why that was so?

    I don't see the problem with plate tectonics and the land mass on one side and oceans on the other, earlier earth was still going through a big wobble, plus internal magnetic shifts causing even bigger wobbles, it has lessened somewhat in the past few billion years from inertia. We know the outside of the planet is cooler, so it hardens more. Hard stuff on hot spinning stuff might tend to slide around a little. Plus way back then we were still accumulating masses of water from comet hits, splash, splash, splash, bit smackdowns and more water, tends to make things move around. Eventually gravity starts to pull it out and flat, just like they spin out big sheets of glass on molten metal, or the guy at the pizza joint makes the pie crusts, then internal pressures move stuff up and out making cracks, lather rinse repeat-not seeing any problems with PT yet.

    The continental shelf problem I am not aware of, what's the problem with it?

  162. Thiotimoline by Mal-2 · · Score: 1

    Build that machine using thiotimoline. If you refuse to add the water after the machine has already tripped a positive response, expect your pipes to burst, or your house to be swamped in a flood, because the mixing of the thiotimoline and water has already happened/must happen. Computer says yes!

    Mal-2

    --
    How is the Riemann zeta function like Trump rallies? Both have an endless number of trivial zeros.
  163. Warren Buffett by Anonymous Coward · · Score: 0

    So I guess time travel is possible...

  164. John Titor Was Right!!! by eno2001 · · Score: 1

    He said we were getting close to time travel and that the equipment already was on the horizon! How long before we do our first trials in sending objects back in time? Only time will tell!

    --
    -"...bad old ideas look confusingly fresh when they are packaged as technology" - Jaron Lanier (Digital Maoism on Edge.o
  165. Good idea to raise funds through private means by wikinerd · · Score: 1

    I cannot comment on this researcher or the worth of their findings/research, but I want to say that I strongly support fundraising for research through donations and time volunteering. I think we must detach academic research from government funds, as when we allow the government to fund our research we find ourselves controlled by the government and big business in the end. Scientific research must be supported by the community, as happens in open source. Common people should volunteer their time and money to enable trustworthy researchers with proven ability to solve important problems. Researchers should also publish their findings on the Web and open journals for all to see, not only to expensive elitist journals that very few have access. Unfortunately few common people understand science, so we may be thousands of years away from the point where grassroots-democratic scientific research supported by communities independent from governments and big businesses becomes a social reality.

  166. Re:Information is TimeTravelling, not phisical mat by Anonymous Coward · · Score: 0

    Its obvious there is a fundemental difference. What isn't obvious to me is how that difference is in any way useful in the implementation of any real device or method. I don't doubt someone has a good answer. Until I find one I'm going to keep thinking its useless and even assume that anyone who "takes advantage" of this useless effect is in fact a crackpot and or simply fooling themselves.

  167. Terminator theory by freeze128 · · Score: 1

    Just deciding not to press the button isn't good enough to cause a paradox. You would need to make sure that nobody else could come along and press the button.... Or maybe there was an earthquake, and some plaster falls on the button. No, in order to cause a paradox, you would need to not even invent the machine in the first place.

    I sure hope he gets more funding...

  168. Been done by Anonymous Coward · · Score: 0

    Just set your system clock back by a few hours before sending a message.

  169. Re:obligatory neozennist comment by Anonymous Coward · · Score: 0

    Time is God's way of keeping everything from happening all at once.

  170. This won't work by kmac06 · · Score: 2, Informative

    Disclaimer: I am a physicist working in a quantum information group, and have taken a graduate level physics course on quantum information.

    This won't work. The article doesn't give details, but by googling the scientist, I found this proposal, and immediately recognized the flaw in the experiment. He's trying to use a quantum eraser (wiki of quantum eraser, and link to good article on them) to change the image of the downconverted photons on a camera, but that simply cannot be done. The image on a screen can be changed using a nonlocal eraser, but only when you look at conincidences of the two photons. This is a common proposal for FTL communication, I just can't believe no one ever told this guy why it wouldn't work.

    The quantum eraser (linked above) can be pretty tough to get your head around. It combines interference, entanglement, and nonlocality, all tough nonclassical phenomena. Feel free to ask if you read the article and don't understand something.

    1. Re:This won't work by Anonymous Coward · · Score: 0

      The quantum eraser experiment is very interesting and can be understood with basic knowledge of QM. But what the heck is a "coincidence chamber" and how does it work?

    2. Re:This won't work by vanDrunen · · Score: 1

      I read the paper by Walborn et al. http://grad.physics.sunysb.edu/~amarch/Walborn.pdf and can only conclude that it is possible to transmit data between two obervers by carrying out the described "double-slit quantum eraser experiment" but nowhere I could find at what speed this communication would be.

      Read the article and just think of this:

      It is clear that the observer behind the double-slit window with quarter wave plates (observer #1) will detect an interference pattern (wave-like behaviour) as long as the entangled photon detected by observer #2 gets polarised and can therefore not give any information about which path the photon took through the double-slit window (by comparing polarization of both received signals).

      In case the entangled photon detected by observer #2 remains UNpolarised the information could be used to derive which path the photon took through the double-slit window. Because of this the wave function will collapse and observer #1 will NOT see the interference pattern (which is particle-like behaviour).

      By letting observer #1 switch the polariser in front of the detector "on" and "off" the interference pattern measured by observer #2 should then in turn respectively "appear" and "disappear" DISREGARDING the distance between observer #1 and #2.

      BUT... does this indicate a faster than light communication between the two observers by means of just switching on/off a polariser on one side and measuring an interference pattern on the other?
      It seems to me that the "communication" between the two entangled photons is instantaneous as if there was no physical distance between them. But to be able to construct a graph with the interference pattern (or lack thereof) you will need information from BOTH observers. The only way to get information from observer #1 and #2 to construct the interference graph is by using a normal/classical communication channel which is still limited by the speed of light.

      Please correct me if I'm wrong!

    3. Re:This won't work by kmac06 · · Score: 1

      Essentially what the second polarizer is doing is measuring whether or not the other photon got through a slit. By doing this, it destroys the information about which slit the first photon went through. So in order to see the interference pattern, you need to only look at events where you saw a photon at both detectors, which is called a coincidence. The coincidence chamber just tells you when both detectors triggered at the same time.

    4. Re:This won't work by kmac06 · · Score: 1

      After inserting the QWPs, no interference pattern is visible. The only way to see an interference pattern is to selectively look at the photons that are correlated to the other photon either getting through the polarizer or not.

    5. Re:This won't work by vanDrunen · · Score: 1

      I understand that with Walborn's double-slit quantum eraser experiment that FTL communication is not possible, because to be able to see the interference pattern after the QWP's are inserted you'll need to measure the coincidence of reception of both the quantum entangled photons from both observers (which requires a normal "at speed-of-light" communication channel).
      Walborn at al. only provided experimental proof for the quantum erasure effect (which was the scope of the experiment) and also showed that the order in which the photons are detected by both observers is not important.

      But it is not made clear in the experiment described by Cramer how exactely FTL communication would (or would not) be possible, so what is the catch here?

      We know that the two down-converted photons will be momentum-entangled, have a different polarisation and that both will always show the same behaviour (either wave-like or particle-like) because of the entanglement.
      In the Walborn experiment it was not known which of these two photons went to which observer so a measurement from both observers was needed to derive which-path information. The interference pattern was destroyed by adding the QWP's (marking the path of the photons) and can be reconstructed with an appropriate measurement by the other observer (erasing the effect of the QWP's).
      In the Cramer experiment the photons are split with a polarizing splitter to both observers. The presence of an interference pattern at the camera would be entirely dependent on a "choice" being made by the other observer controlling the optical switch for measuring which-path information or not. Cramer does not show that a coincidence measurement is done to construct the diffraction pattern like in the Walborn experiment!

      It is not clear to me what results you would get with Cramer's experiment without a measurement of coincidence (requiring normal communication from both observers to a coincidence chamber). Would you be able to see any interference pattern at all?

    6. Re:This won't work by kmac06 · · Score: 1

      No, you would not see any interference pattern in Cramer's experiment. The reason is because of the lens that, in a paraphrase of Cramer, images the same position of the first photon on the second screen, because of the momentum entanglement (going through a lens is the same as taking the Fourier transform, or looking at the momentum of the photon). This means that you can measure which slit the second photon went through to get "which way" information. I'm not sure how Cramer is planning on reconstructing the interference pattern, since I don't see how his setup would act as a quantum eraser. Although Cramer seems to think he will actually see an interference pattern without looking at coincidence so I don't think he really understands how a quantum eraser works anyway.

  171. Great! by rlbond86 · · Score: 1

    Then they can develop the EPR radar to detect the Gnosis, and use the Hilbert Effect to phase them into our plane of existence!

  172. Anyone else see a hole in this? by KoldKompress · · Score: 1

    I know this is an old thread, but if it really DID work, why would he need investment? Surely he could get himself to invest in a few choice stocks or bet etc.
    My logic is infallible!

  173. I actually laughed out loud!! by godfra · · Score: 1

    Sheer brilliance, Sir! *doffs cap*

  174. Wheee by Anonymous Coward · · Score: 0

    Just need one orbital photon modulator, one micromassive singularity, a b-field vortex coil, and I'll have what it takes to build a trans-temporal interocitor. (Or something like that.) Then I just need to figure out the quantum gate transfer protocol. Anyone say man in the middle attack? lol

  175. Quantum Mechanics = Faster than light by extrandall · · Score: 1

    I found this site claiming that messages can be encoded into light particles and sent faster than the speed of light by the use of quantum mechanics. http://www.npl.washington.edu/av/altvw75.html Imagine the bandwidth. (Mmmm Bit Torrent)

  176. Rationality by CopaceticOpus · · Score: 1

    If the experiment is a failure, just think of it as your investment growing backwards in time!