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Where Are The Edges Of Today's Technology World?

Veeru writes "As mentioned on Nova, my great-great-grandfather Amos Ives Root published the first eye witness account of the Wright Brothers flight almost 100 years ago. Scientific American had rejected his article as 'unbelievable' and 'having no practical application'. The secretive Wright Brothers allowed Amos to publish the article in his own Gleanings Bee magazine instead. Because of his objective account, other experimenters may not have received the credit they deserved. I recently realized that Amos was intent on investigating the highest tech advances of the day and that the airplane was the most advanced phenomenon he could find. If Amos were alive today, what obscure technology would he be pursuing?"

38 of 509 comments (clear)

  1. The edge? by xeno_gearz · · Score: 5, Interesting
    While this is an interesting point to ponder, the viewpoint of Bill Joy is a valid counter-argument as well. I realize this has been discussed on Slashdot before but still, do we draw a line as to where the edge of technology is? I suppose we make these choices everyday but are they always the right ones? While I don't immediately subscribe to a theory of a robot takeover, as some fear, I wonder about the possibility of technology reaching points "out of control" of humanity.

    Those points aside, I have been amazed by the research in nanotechnology and find the realm of mapping the human genome to be interesting as well. Perhaps subjects such as these would interest Amos? Perhaps these are not as obscure as other fields but these are certainly interesting studies.

    --
    *
    troll blacklist. Please mo
    1. Re:The edge? by DAldredge · · Score: 3, Interesting

      I think people like Bill Joy, Ester Dyson and others draw/redraw the line depending on what will most help them sell books/sell talks/stay in the spotlight.

    2. Re:The edge? by Anonymous Coward · · Score: 1, Interesting
      Let's put some napalm on the flames.
      Genesis 1:28
      And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it: and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth.

      Now, prooftexting is an ugly thing. Rather than build a point on this let me ask:
      Theist or atheist, how can we set about drawing a line at all?
      I suppose we make these choices everyday but are they always the right ones?
      This seems to crack open the whole moral/ethical wormcan.

      How can you derive a generally acceptible idea of "right" (I don't see how, without becoming religious pretty quickly--lack of an absolute truth claim leads to everything being rationalizable)

      Even if you manage the previous point, how do you manage those who simply will not play along? WMD, indeed.

      Wait a minute--this is /. What are we thinking, thinking here?

    3. Re:The edge? by D+iz+a+n+k+Meister · · Score: 2, Interesting

      From what grounds would an atheist derive his fixed moral compass?

      From any grounds he chooses. The only thing necessary for a fixed moral compass is that the morals are fixed. How is this not obvious?

      Since I believe in situational ethics, you're both fscked in the head, regardless.

      --

      He painted a unicorn in outer space. I'm askin' ya, what's it breathin'?
    4. Re:The edge? by Anonymous Coward · · Score: 1, Interesting

      This is probably a troll, but I'll bite anyway.

      How can you be sure that you are 'making the right decision' when your concept of right was defined by a process that might be subject to mistake?

      Short answer: you can't! But neither can you. If you wanted 100% certainty about anything, you would be paralyzed by indecision. This is as true of the religious believer as it is of a rationalist. What you can do is try to use methods which are more likely to lead to correct beliefs. Admittedly, there is no way to know with certainty which methods are corre ct, but I believe that empirical research -- opening your eyes and investigating -- is to be preferred over blind unquestioning obedience to tradition, or whatever. Whenever religion (by which I mean primarily Christianity here, since there are empirical religions (e.g., early Buddhism)) and science have disagreed, the empirical method has won out. Is the Earth at the center of the universe? Religion said "yes, because tradition says so; don't look through the telescope and verify it empirically". Fortunately for us, some were smart enough to look and see.

      You also can't be sure that blind faith is 100% right, so we're both in the same boat in that regard. The difference, however, is that an empirically-based approach has been shown to lead to knowledge time and time again, while blind faith, well, doesn't have such a good track record (is the Earth flat? Is the Earth the center of the universe? Is there a celestial sphere surrounding the Earth in which stars are set? blah blah blah).

      Things sure are easier if you choose to believe unquestioningly in an absolute moral compass.

      Easier is seldom better! Perhaps it's easier to think that your government can do no wrong, but that doesn't make it right. And many things are easier for a while, until reality points out the folly in this approach with brutal candor. Many Germans in the 30s believed the propaganda they were fed, and it was easier to believe than to take the empirical approach and actually make up one's own mind. For a while, at least.

    5. Re:The edge? by Anonymous Coward · · Score: 1, Interesting

      No, I think Bill Joy is serious, although he seems somewhat overly paranoid. He's probably getting old and he is really somewhat out of his field.

      But similar critics include very knowledgeable people, such as Martin Rees. I think his assessment that the human race has about a 50% chance of surviving to the end of this century without a major disaster seems reasonable.

      Frankly, the irrational techno-optimists (Kurzweil, Minsky) are just as bad if not worse. The genuinely believe in sci-fi visions that are far beyond what we're ready to predict.

      Myself, I think that the vast majority of technical breakthroughs are not dangerous, but if we're aggressively pursuing everything, it is sufficient that there exist some that are.

      OT - I have nothing against pursuing technologies per se, but the current trend of commercializing stuff before they are even properly understood is wasteful at best and dangerous at worst.

      The "deliver everything to everyone ASAP, and make it cheap" mentality can't be sustainable, especially with the population increasing even further.

    6. Re:The edge? by thered · · Score: 2, Interesting

      please excuse me for edging in on this off-topic, but quite interesting, discussion.

      Isn't absolute truth more akin to the axioms of geometry than the logical manipulations of arithmetic? If absolute truth is like a set of postulates, then religion is the set of rules governing how one uses those postulates to decide how to act in the world.

  2. Time travel by WinterpegCanuck · · Score: 5, Interesting

    As far out as it seems, there are real efforts in making a time machine. I forget what university was doing the research, but it involves using lasers crossing each other at 90 degree intersects to create a column or vortex of light. While this cannot let them travel back in time, it is theorized it will let particles travel through the time that the machine is turned on. I apologize for the specifics, but am sure the slashdot effect can find the specifics.

    1. Re:Time travel by nEoN+nOoDlE · · Score: 2, Interesting

      Here's one.

      --
      Don't trust a bull's horn, a doberman's tooth, a runaway horse or me.
  3. Promises... by Anonymous Coward · · Score: 5, Interesting

    In the 50s and 60s, we were all under the impression that it'd be flying cars, robots and automated kitchens that cooked for you. Robots would be really smart and virtually be home helps.

    None of this has happened.

    This is one of the reasons I'm skeptical of current nanotechnology and genetic solutions actually being major breakthroughs. It'll be like Moore's Law for technology - things will just progress, rather than achieve sudden overnight success. I mean flying - it's boolean - you fly or you don't fly. Once you've conquered that you can improve on it. Nanotechnology I feel really needs advances in AI and other technology fields which I feel are being neglected - batteries, vision systems, sensors - they all need to improve before nanotechnology takes off big time.

    So maybe it's a disparity thing. Maybe we'll be held back in certain areas because other technologies aren't available yet - like Civilization :o) So maybe, just maybe, we need to revisit some of those older ideas to progress?

    1. Re:Promises... by Coryoth · · Score: 4, Interesting

      I mean flying - it's boolean - you fly or you don't fly. Once you've conquered that you can improve on it.

      Maybe that hints that the X prize winner might be where we ought to be looking - theres something that has a nice boolena value: You get into space cheaply in a resusable vehicle, or you don't... and there's plenty of room for improvement once someone wins the X prize challenge: Higher (LEO would be nice), and with more payload.

      Cheap and easy spaceflight could well be the teach that really reshapes the next century.

      Jedidiah.

    2. Re:Promises... by ChrisMaple · · Score: 3, Interesting

      TV dinners and microwave ovens are pretty close to a kitchen that cooks for me. I suppose I could put a hot food vending machine in my kitchen, but I prefer things the way they are.

      --
      Contribute to civilization: ari.aynrand.org/donate
    3. Re:Promises... by orkysoft · · Score: 2, Interesting

      First, you write like I did when I was six. That would be a compliment, if you were six. I'm pretty sure you're not.

      To get back on topic: how about all those rocks that are floating around our solar system? Many of them aren't that far away, and some of them are really big and full of elements that are rare on earth!

      Also, take Mars. It's less than a year's space flight away (at current accelerations) and it's just plain interesting. Fascinating. Has there ever been life on Mars? How come it has the surface features it has? IMHO, those questions are reason enough to go there.

      Of course, stars other than our own sun are currently too far away to travel to. But that might change in the future. You never know.

      What would you have posted a hundred years ago, on the subject of flight? That it would be impossible to fly great distances because the flying people would tire of flapping their wings? Because it wasn't possible to fly for more than eleven seconds, so the entire continent would have to be paved with airfields? That instead, we should concentrate on moving cargo and passengers with the proven wheel technology instead?

      Tell you what, both wheels and wings are very valid modes of transportation nowadays. No continent is too far away anymore. The amount of fuel that big airplanes need is actually small enough for them to carry. Bet the Wright brothers didn't know that, huh?

      Don't flame new technology research. People want to research other means of getting into space, and the chance, however small, that some of them succeed, is IMHO more than enough justification for those people to continue their work. Also, they find their research interesting. If you don't find it interesting, it doesn't mean they should stop it.

      --

      I suffer from attention surplus disorder.
  4. The real edge lies elsewhere... by gregwbrooks · · Score: 5, Interesting
    You can explore the edge of technology, but you're chasing a chimera. Things change fast, they're going to change faster and future generations will think of astounding things to do with the technologies we're only now beginning to explore.

    The technologies of the last 200 years have so far outstripped past human progress that the real action in the coming years/decades/centuries will be the philosophical, moral and political assimilation of technology. We've done an increasintly poor job of it as the pace of advancement has quickened; it'll be interesting to see what (if anything) causes a tipping point after which we'll really explore the full impacts of new technologies.

    (Disclaimer: I think Bill Joy is an alarmist.)

    --


    "It was a summer's tale: Just a boy, his Linux, and a head full of dreams..."
  5. Safe Nuclear Batteries by Amiga+Lover · · Score: 5, Interesting

    Strontium Nuclear Batteries are one. Known about and succesfully demonstrated since the early 90s, a single 5gram piece can put out enough SAFE radiation to be turned almost directly into energy, that it can supply 75 watts for months on end. It's not harmful to animals, it's not expensive, it's no more expensive than sterodent.

    It's also a technology that nobody believes has any use because of the words "nuclear" and "radiation"

    It'll come soon enough

    1. Re:Safe Nuclear Batteries by HalfFlat · · Score: 5, Interesting

      Is there any more information about this on the web? The only link I could find was on rexresearch, which while very interesting, does unfortunately taint it with associations with less plausible technology.

      How much strontium-90 is currently being produced in commerical electricy-generating nuclear reactors? (and how expensive is it to extract?)
      This sort of technology has huge potential, not least of which being that it can be used to extract energy from other alpha- and beta- emitters (ie a fair chunk of nuclear waste.)

      Strontium-90 isn't completely benign (it is a beta source after all, and its one radioactive decay product, Yttrium-90, I think is an even more energetic beta emitter.) It behaves chemically much like calcium, so if it's inhaled or ingested, it can be incorporated into bones, etc.

      On the other hand, I get the impression that it is less dangerous than oven cleaner. You wouldn't eat that either, and like strontium-90, bare skin exposure is ill-advised.

  6. Things to Come.... by Braintrust · · Score: 3, Interesting

    1. Practical Immortality
    (it's right around the corner, hell, we could do it now if not for those damned ethics... that's a joke, son...)

    2. Sustainable Fusion
    (again, right around the corner. ITER WILL work, and unlimited, non-polluting energy is here... think what that means...)

    3. The Ion Drive
    (already proven, power being ramped up monthly by orders of magnitude, will open up solar system for exploration, mineral harvesting, golden age begun...)

    Dozens more... it's a great, great time to be alive... although many people would have you believe different.

    --
    Years later, a doctor will tell me that I have an I.Q. of 48, and am what some people call "mentally retarded".
  7. Re:Funny thing about that rejection by electrichamster · · Score: 5, Interesting

    Just a thought, but why doesn't slashdot implement a feature that lists all of the rejected submissions on another page.
    Obviously people would submit spam, so the reviewers would also have to have a "spam" (and possibly a "duplicate submission") button as well as a "reject" button.

    It would provide an interesting read for all of the smaller bits of news whizzing around that none of us get to see due to the tight reviewing process.

  8. Where technology appears to be magic. by Kris_J · · Score: 4, Interesting

    Just look at any technology that appears to almost be magic. This is where the edge is. Bluetooth and WiFi are up there, guesture-based interaction is close. Imagine being able to unlock the door to your house with a (specific) wave of your hand, all worked out using sensors built into a ring or glove and relayed to the house's security system using an encrypted RF data technology. Personal Area Networking is a group of technologies with a lot of potential. There are many more examples, I'm sure.

  9. Re:What the future does not hold by WolfWithoutAClause · · Score: 2, Interesting
    Ah hem. Space tourism is already here... you know, Dennis Tito?

    Flying cars? Depends what you mean by 'car'- plenty of millionaires run helicopters; as I say depends.

    End of Moore's law? We'll see.

    Practical fusion energy? Good news on that front! After more than 50 years of it being 50 years away, it's now only 30 years away!

    Human capable AI? See Moore's law.

    --

    -WolfWithoutAClause

    "Gravity is only a theory, not a fact!"
  10. Social Engineering by EvilTwinSkippy · · Score: 3, Interesting
    Amos would probably be studying the next step in "productivity" which will be the design of entire social systems from religion to the line at the DMV. Like it or not, we are manipulated every day by hucksters, salesmen, advertisers, even charities.

    It's not going to be all that long till governments apply the same principles to "mind persuasion." Yes, the attempts in the past have been laughable, from WWII's Rationing Slogans to the War On Drugs.

    But sooner or later they are going to get it right. Just look at DeBeers, who managed to invent an entire social custom wrapped around crystalized carbon. And clear, colorless crystals at that.

    No imagine that persuasion in the hands of Uncle Sam.

    --
    "Learning is not compulsory... neither is survival."
    --Dr.W.Edwards Deming
  11. Imaging immunity and virology by __aadkms7016 · · Score: 2, Interesting

    The coolest seminars I've seen on campus this
    semester have been virologists and immunologists
    making real-time movies of cells under attack
    (virology) and pre-empting attack (immunology).
    To sit there in the audience and watch a movie
    of a flu virus (tagged with a flourescent marker
    to look red) tricking its way into a cell, maneurvering
    to the nucleus, and attacking it, is just stunning.
    And the immunologists have the same sort of
    movies with dendritic cells dancing with antigens.
    Yes, I realize its a long way from having the movie
    to understanding the science behind the movie
    sufficiently to reach the clinic, but that fact
    doesn't make it any less stunning ...

  12. Nanotech by MarkusQ · · Score: 3, Interesting

    Please, can we stop calling it "nanotechnology" and start calling it what it really is?

    CHEMISTRY!

    I'm not trying to be funny. That new stain-defender stuff in pants? Apparently it's called nanotechnology. No! Chemistry! It's just chemistry! Stop subjecting your minds to buzzwords.

    Brief history:

    • Some people came up with a very interesting idea, and called it "Nanotechnology"
    • The word got very popular, and so people started calling all sorts of other things "Nanotechnology" in the hopes that some of the coolness would rub off.
    • People who knew about the original idea got annoyed by this, and people who didn't know about it fell into two groups: the ones who had no clue said "Gee, buzzwords, swell!"; the more cluefull noticed that the word was being applied to stuff that wasn't all that special and got annoyed without realizing that the orginal idea even existed.
    Nanotech (in the original sense--what is now being refered to as eutachtic chemistry and/or machine phase chemistry) is to clasical chemistry what semiconductor technology is to leyden jar and cat fur electrical science. We aren't there yet (and may never be) but the idea doesn't deserve the glib dismissal it gets from the hipply cynical.

    -- MarkusQ

  13. Re:It's not the flying... by PReDiToR · · Score: 2, Interesting

    It's the soft landing that's the bitch to get right.

    Any landing you can walk away from is a good one. So they say.

    --

    Do not meddle in the affairs of geeks for they are subtle and quick to anger
  14. Re:Is obscurity still possible? by 10101001+10101001 · · Score: 2, Interesting

    You've got to remember that at the time manned flight in anything beyond hot air balloons was in the same realm as fusion is today. Ie, lots of research, lots of failed attempts to produce a viable product, and more than a few people screwed over in the process. At the time, so many failed attempts had occurred it was just assumed that it was impossible. The last thing Scientific America wanted to do was print the story up and look like another idiot.

    Meanwhile, the Wright brothers were intentionally as secretive as possible because even if they were to patent a lot of their ideas, it's still pretty conceivable that a venture capitalist funding their ideas would have been too overbearing for their tastes. So, they worked in secret. The only thing about your statement that rings true is it'd possible not be as obscure thanks to scientific tabloids which don't have a reputation to worry about. There are at least a few of those online, right? :)

    --
    Eurohacker European paranoia, gun rights, and h
  15. The Obvious Limit by BoRegardless · · Score: 2, Interesting

    If GGGpa were alive he'ld be interested in surfaces, substrates and substances described and builtup from the atomic and molecular level. NFC is a prime example. Near Frictionless Carbon is a plasma or similar deposition coating which is very hard and dramatically lower in friction than Teflon. The applications for this exist in tens of thousands of products eventually, from hard drive bearings to diesel engines and hardware in space.

  16. Give me an ethernet jack in the back of my skull by danlyke · · Score: 3, Interesting

    I think the next big advances are going to be in biology. No, I don't think we're going to live forever in the near future, there's not enough room for healthcare as a percent of GNP to make that a reality. The two big advances are going to be in:

    1. Biology for manufacturing. Call your "nanotech" what you will, simulating large scale mechanics at a small scale just has too many problems. However, revamp bamboo to grow me a house, or corals to grow me dishes, and we're talking something that's got a market.

    2. Computer interfaces. Right now we've got a few monkeys controlling robotic arms (and world superpowers, but I digress), and there are definitely parallels to be drawn to the world of various gliders and steam powered aircraft that were burgeoning around 1903. Something with huge economic and social potential, that can completely "change the world" in the way aviation promised to, is a moderate bandwidth back that bypasses our current sensory system.

  17. Taonology by EvilTwinSkippy · · Score: 2, Interesting
    We are about at the end of what the pure, objective, scientific method can tell us about ourselves. To delve any deeper into Sociology or Psychology forces us as the observer to interact with the system. It's not just "brain" studies. Physics has the same problem too. To study an atom requires bouncing a magentic field, a light beam, an electron, basically something that alters its behavior.

    Whatever methodolgies we develop for dealing with this problem is going to be the successor to the scientific method. It will also put to bed a lot of the crackpot UFO and ESP crap.

    Well, at least the parts that don't pan out under scrutiny.

    --
    "Learning is not compulsory... neither is survival."
    --Dr.W.Edwards Deming
  18. Re:Give me an ethernet jack in the back of my skul by EvilTwinSkippy · · Score: 5, Interesting
    What you would end up creating are a set of parallel senses to the natural senses, or at least a great big "digital" sense.

    Remember, sensory processing begins at the nerve endings in the sensory organs. Much of your brain's interpretation of what the eye sees is handled in the first few layers of cells in the retina.

    A second problem is that of resonance. Your brain produces a reference wave and measures sensory input as an interference pattern to that wave. While you could easily exploit that phenominon to transmit data to the brain, it would be nearly impossible to make it believe the information is coming from the sensory organs.

    That is not to say you could not produce very vivid images using this new sense. I recall an experiment where researchers were able to teach a blind man to see using pressure transducers on his back. They had a camera that would translate a signal from a black and white CCD into pressure intensities laid out like a grid. The subject was able to adapt that system into a crude form of vision. There are also reports of deaf people who "hear" by feeling the vibrations of speakers, at least enough to enjoy music.

    This sense would have to be developed in people. But I could see it as a powerful tool. It would be cool if my car could translate data from proximity radar system into my brain. Instead of relying on mirrors I could "feel" the road around me. Know where the curb is. Sense that Kia in my blindspot. Vibe that cop over the next hill with the radar set.

    Would it be sense like we know them? No. Instead it would be sensations the likes of which we had never known before.

    --
    "Learning is not compulsory... neither is survival."
    --Dr.W.Edwards Deming
  19. Re:Stuff that Science Doesn't believe in by FuryBuzby · · Score: 2, Interesting

    Hmm...

    Teach me to use the preview button..try again

    What about the following 'technologies' that science believes to be fake?

    Lifters - http://jnaudin.free.fr/lifters/main.htm
    Dowsing - http://www.phact.org/e/dowsing.htm
    Cold Fushion - http://www.wired.com/wired/archive/6.11/coldfusion .html

    How many technologies are ignored just like flight because people just can't believe it can be true.

  20. Psychological Camoflage and Anti-camoflage? by Artifakt · · Score: 3, Interesting

    Given things we are just learning, from a number of fields that appear initially very far apart, I think we might be able to do some very subtle things to keep people from interpreting what they see in an undesired way, or steer them towards a desired interpretation.

    I can imagine this working in a lot of ways, some good, some not so good:
    You come to an intersection in a hallway. Even though there are no signs, you are normally not a person with a good bump of direction and you are deep inside a very large building, you immediately get a feeling that left leads towards the shortest route to an emergency exit. Each time you come to another junction, this feeling adjusts to the new location.
    You are outside a building. There is an unlocked door there, but unless you are supposed to go inside the building, it looks so uninteresting that you ignore it. If you were actually planning to rob the building, the door looks extremely dangerous in some ill defined way.
    A highway crew re-grades a stretch of interstate, and installs some new reflective edging and lane markers. Traffic flow rate increases by 50% and traffic jams during rush hour are greatly reduced. Accident rates drop. Close observation reveals that people planning to use the exits or business bypass-loop are getting over into the best lanes much sooner than before, and are somehow more prone to pick good times to pass or make lane changes.

    Obviously, if this is doable, it could also be abused:

    "Our country allows free emmigration. These people could leave if they wished. Unless you think they can't see the crossing gate at the border."

    "It's funny, but until I made up my mind to vote for Geefler, I hadn't even noticed those new "polling place here ->" signs. They really stand out, don't they."

    While all this may sound far fetched, there are already some modest examples. Disney has built a "Tiger Hunt in India" themed ride in one of its parks, and uses decorative pictograms on a mock up crumbling ancient temple to tell a story of a race who angered the generic Disney "mother earth goddess" by ecological shortsightedness. They are punished by natural disasters, and then clean up their acts and the disasters stop happening. While most visitors don't have nearly enough time to puzzle out all the pictograms consiously, supposedly this ride has the lowest littering rate of any ride in the park.
    I can see how this might become a much more robust and reliable technology, but given some of the examples, I'm not at all sure I want it to. A lot of it sounds like extensions of what some advertisers are using to overcome resistance to ads, and some of it sounds Orwellian, but either way, it may be possible to go a lot further towards mind control than most expect.

    --
    Who is John Cabal?
  21. Ader and other pretenders by blitz487 · · Score: 2, Interesting
    Ader has in common with other pretenders to the Wright's accomplishment,
    • There is no proof that Ader accomplished any more than a couple of ineffectual hops. The Wrights, on the other hand, have incontrovertible proof of sustained, controlled, powered flight.
    • Ader's machine made no contributions to aviation technology. The Wrights made numerous major contributions tracable right back to the 1903 Flyer.
    • Ader made no followups. At the peak of his supposed success, he quits like all the other alleged first flighters. Except the Wrights, who built successive machines, each building on the success of the previous.


    Color me skeptical. And btw, the Wrights contributed a lot more innovations than just control.
  22. Re:Nuts. by MarkusQ · · Score: 3, Interesting

    There's coal in space? I thought coal came from dead plants and dinosaurs. Even if there was coal just floating around, would we really want to bring it back here and burn it? Don't we have enought air pollution?

    I used coal as a shorthand for "chunks of mostly carbon that aren't diamonds or graphite"--which is close enough to the generally accepted meaning that I'm willing to stand by the useage. At any rate, there are such lumps and if you brought some back here most people would agree to call them coal.

    But you'd be nuts to bring them back, and even more nuts to burn them; their primary value would be in space for use in making stuff--mostly plastics, medicines, etc., but someday diamondoid materials, buckytubes, etc.

    Additionally, I remember being taught in grade school that if there were 100% pure gold bricks just lying on the surface of the moon for the taking, it still wouldn't be fiscally worth it to go there and bring them back. It's just too expensive. Or so I was told.:)

    So don't take it back to your old grade school. Gold isn't just pretty, it's useful. It's wonderfully conductive, corrosion resistant, ductile, etc.

    Stop thinking like a colonialist, and start thinking like a colonist.

    -- MarkusQ

  23. Re: Space flight by some+guy+I+know · · Score: 2, Interesting
    Space flight is a huge *waste* of valueable [sic] research dollars. [...] There is nothing valueable [sic] in space within our grasp as far as anyone knows [...] you probably need around 1 1/3 times the sqare [sic] of the mass you will be moving in fule[sic]. This is hopeless, there is not enough fule [sic] on earth to reach the nearest fule [sic] stop out in the universe and bring any back. Space travel is worthless becase [sic] there is too much space we cannot cope with crossing those distances
    Your post is laden with such a huge mass of excrement that light has difficulty escaping from its surface.

    The nearest "fuel stops" are the comets, some of which human-built spacecraft have already reached.
    Once we get controlled fusion past the break-even point, we will have access to more fuel than we will know what to do with.
    Mankind does not need to get to the stars using FTL or generation ships or any of that; we can get to the stars by hoping from comet to comet in interstellar space.
    It may take thousands of years, or hundreds of thousands of years, but we will get there.

    This is what humankind needs to get to the stars (that we don't already have):
    • Controlled fusion past the "break-even' point.
    • Better life-support technology (e.g., artificial "gravity" (by rotation or other means), resource/waste management/recycling technology, etc.).
    • The will to go.
    The following would be helpful, but are not necessary:
    • A skyhook (space elevator).
    • Advances in genetics (e.g., to allow humans to live long-term in a weightless environment, to advance the human life-span, etc.).
    • Advances in A.I., and/or the ability to download wetware into software.
    Space flight is not a "waste of time".
    It's the only (currently known) way to ensure the long-term survival of the human species, indeed, of all known life, period.
    --
    Those who sacrifice security to condemn liberty deserve to repeat history or something. - Benjamin Santayana
  24. So true. by Jesrad · · Score: 2, Interesting

    And even earlier people said "we have more crops growing food than we would ever need to make it through winter comfortably, everyone has a horse for quick and cheap travel, and our priests are developping effective medicine. We pretty have much everything we need".

    Or even earlier: "We have very effective lances and javelins for hunt, and our shamans know which plants are edible and how to repel bad spirits. We have pretty much everything we need."

    Happiness is relative. And to think we are more developped than our ancestors because of technology is one of the biggest delusion of mankind. We still are the same primates we were ten thousand years ago.

    I'll tell you what we don't have yet that I want: a space elevator, immortality in a vaccine, time-travel, unlimited energy, antigravity and faster than light travel. And of course more bandwidth. Once we got all that, there will be dreamers who'll find more things to wish for, don't worry.

    --
    Maybe we deserve this world ?
  25. Re:Rename it? by mat.h · · Score: 2, Interesting

    MRI (Magnetic Reasonance Imaging) came from NRI (Nuclear RI)

    No. The old name was NMR (nuclear magnetic resonance) tomography, where NMR is the name of the particular quantum mechanical phenomenon that's exploited. There are other applications of this (e.g. NMR spectroscopy), so it did make sense to coin a name for its use in tomography. (Journalists still manage to mix everything up and write that the physics department of our local university recently got new hardware for making brain scans.)

    A related example in radiology would be that the "X-ray" in X-ray CT (computed tomography) is usually dropped. Whether this is done for brevity or to avoid the "X-rays -> ionizing radiation -> cancerogenous" connotation, I don't know.

  26. Re:Time travel [still OT] by pkaral · · Score: 3, Interesting

    The whole idea of taking traveling to the past seriously is pretty annoying. Quite simply, time travel into the past is not possible without abandoning the idea of causality.

    This is simply not correct. Time travel does not contradict causality, only some people's concept of "free will".

    To explain: You cannot "change" history, simply because it "is already there". The notion of going back and "overwriting" one history with another a la Back To The Future suffers from the "Second Time Around Fallacy". History can by definition not be changed.

    History can, however, be influenced by a time traveler. The history we know has been produced by past events, some of which can have been caused by a time traveler. So when I go back, I know in advance that everything I do must be consistent with the history I know. How this is "enforced" is the big question, but I bet a bit of Bayesian probabilities are involved. By that I mean the following: The base probability of various events that may prevent me from killing my grandfather can be very low (e.g. the probability of loosing the gun down a chasm just before I reach his house). However, the conditional probability of these events given that I will not kill my grandfather is much higher. In fact, given that my grandfather most evidently survived my attempt, the only thing to be resolved is how my intended murder was averted. So, if I try, somehow I will fail (and this is where "free will" becomes problematic for some people).

    However, I can still influence things in history. For instance, I could go back to look for some legendary treasure that hasn't been found - maybe it hasn't been found because I went back in time to find it before others and move it! The causal integrity is intact.

    Two additional observations: The above disregards the possibility of "parallell universes". Conceivably, I could go back in time and start "a different history", i.e. a different universe. Given the current state of our knowledge, we cannot rule out that the universe branches into a finite or infinite number of parallell universes at intervals which could be real or infinitessimal. However, you could never move between those universes, so the integrity of the history of each universe would still be preserved. This means that a time traveler "changing history" would actually just move back to an earlier branching point and go down an alternative history.

    Note also that causal loops are quite possible with time travel, and that this does not contradict causality in any way. So you could go back in time and introduce your grandparents to each other (unless you already knew for sure that they introduced themselves to each other).

    Screws up your mind, doesn't it?

    [I have used past and future tenses here, since Douglas Adams neglected leaving us with a copy of the book on the time travel grammar].

  27. Zero-Point Energy Technology by lo_fye · · Score: 2, Interesting

    This is the bleeding edge. Space Energy Access Systems has a $1M prize up for grabs to the first one who can demonstrate a working prototype of a zero-point energy machine. If you've researched Edwin Gray Sr.'s machines, or Nickola Tesla's "Magnifying Transmitter", then you know that these machines can be achieved. Think Tesla was crazy? He invented AC electricity. He designed & installed the power-plant at Niagara Falls. He was Edison's apprentice, and Edison stole some of his work. He had one of the highest security clearances available in the US, and worked with Einstein on the Philadelphia Experiment.

    --
    geeks are cats who dig a certain kind of cool