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Subatomic Darwinism

blamanj writes "In the beginning was Darwinism, then there arose Social Darwinism, now physicists are proposing Quantum Darwinism. According to the Nature article: "If, as quantum mechanics says, observing the world tends to change it, how is it that we can agree on anything at all? Why doesn't each person leave a slightly different version of the world for the next person to find? Because, say the researchers, certain special states of a system are promoted above others by a quantum form of natural selection, which they call quantum darwinism. Information about these states proliferates and gets imprinted on the environment. So observers coming along and looking at the environment in order to get a picture of the world tend to see the same 'preferred' states."."

87 of 556 comments (clear)

  1. Bah by savagedome · · Score: 2, Funny

    ertain special states of a system are promoted above others by a quantum form of natural selection, which they call quantum darwinism

    I don't agree with that.

    1. Re:Bah by RangerRick98 · · Score: 3, Insightful

      Wait, "Interesting"? Okay, uh...I disagree with your disagreement! ::waits for "Insightful" mod:: :P

      --
      "You're older than you've ever been, and now you're even older."
    2. Re:Bah by MrLint · · Score: 4, Funny

      I don't agree with that.

      You are choosing a non-objective reality, and there's nothing wrong with that. :)

    3. Re:Bah by Tackhead · · Score: 3, Funny
      > > I don't agree with that.
      >
      >You are choosing a non-objective reality, and there's nothing wrong with that. :)

      Hey. Get your hands off his wave function. By posting your observation about him, you're collapsing it for me too!

  2. Don't forget ... by Daniel+Dvorkin · · Score: 5, Insightful

    ... religious Darwinism. IOW, beliefs evolve as previous beliefs are shown to be "unfit," i.e. disproven by observation.

    "The Earth is flat, because this passage from the Bible talks about God stopping the Sun directly overhead!"

    "Um, no, actually, it's a sphere, and here's the proof."

    "Okay, okay! But the celestial bodies are little lights in the sky, and perfect and unblemished, and the go around the Earth!"

    "Um, no, actually, they've got all kinds of flaws and blemishes, and they all go around the Sun, and here's the proof."

    "Oh, damn! But the Earth was created a few thousand years ago, as we can determine from Biblical genealogies!"

    "Um, no, actually, it's been around for a lot longer than that, and here's the proof."

    "Aaargh! But humans were specially created by God in His image, and are absolutely unique!"

    "Um, no, actually, we look an awful lot like other apes, and that's really not a coincidence, and here's the proof."

    "*whimper* All right, so the Earth is round, and it and all the other lumpy rocks revolve around the Sun, and it's all really old, and humans are a lot like apes ... but, um, see, there's all this little stuff you scientists haven't quite figured out yet about the specifics, and sometimes you argue about it, and THAT'S ABSOLUTE PROOF OF THAT GOD EXISTS AND HE WANTS YOU TO DO EXACTLY AS _____ (insert your preferred version of a frequently mistranslated, politically loaded anthology of folktales here) SAYS!"

    --
    The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
    1. Re:Don't forget ... by jellomizer · · Score: 2, Insightful

      Unfortunately a lot of these people are looking at the religion the wrong way. Religion and Science are 2 different concepts.

      There is not scientific way to prove that God Does or Does not Exist. (And yes you do need to prove one or the other, and make your proof solid so no one can come up with arguments to it, otherwise it is just a theory not scientific fact)

      As well Religion shouldn't be stating that what scientific observe is wrong or evil because they are just because their observations contradict what their book says. Unfortunately so many people are arguing about these little details in the book and missing the religious concepts in them. Which for the first book of Geniuss which they love to argue the most because it is probably the only part they read they missed the point of the story on How God created the universe and meant it to be Good and how people were meant to be good. Then at some point we gained wisdom (probably threw evolution) and then we started to do things against the natural order and causing a bunch of problems but yet God still gives us a fighting chance.

      Many of these details in the bible seem like pieces added on when a 4 year old when being read a book asks questions.

      Parent: God Created the Earth.
      Kid: How long did God create the earth?
      Parent (thinking to himself): Hmm Lets see the earth is really big but God is also really powerful. So lets say 6 days)
      Parent: 6 Days
      Kid: What did God do after that.
      Parent: Well he took a rest the next day.

      So it is not contradictory to be a good Scientific and Religious at the same time.

      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    2. Re:Don't forget ... by SnapShot · · Score: 3, Funny

      Shit, Kansas just passed a law mandating that colleges teach a graduate-level "sub-atomic Creationism" course.

      --
      Waltz, nymph, for quick jigs vex Bud.
    3. Re:Don't forget ... by tcopeland · · Score: 2, Insightful

      > There is not scientific way to prove that
      > God Does or Does not Exist.

      Not all truth can be arrived at through the scientific method. For example, it's true that my parents love me, but establishing a double-blind study to prove it would be difficult.

    4. Re:Don't forget ... by isomeme · · Score: 3, Informative

      This is known as the "God of the Gaps" approach; God is assigned responsibility for whatever science can't currently explain. As you point out, the problem with this approach is that God keep shrinking as the gaps get filled in.

      --
      When all you have is a hammer, everything looks like a skull.
    5. Re:Don't forget ... by fimbulvetr · · Score: 3, Interesting

      Like any bible thumper, you are picking and choosing your arguments.

      The age of the earth is not mentioned biblically. Indeed, but isn't the creation of everything mentioned? I seem to recall they say he created people just a few days after the earth. So, to be pragmatic, the earth is mans age (x) plus a few days (3 for example): x+3 days.

      You're right, it isn't a coincidence -- we have the same designer! Good job, you pointed out this fact can be used in creationism as well as evolution.

      shows EVERY KNOWN PHYLUM coming into existence fully formed
      Yeah, welcome to science. 542mya multicellular organisms started showing up. This is quite a bit older than what the bible says. That it was an explosion is far from a fact, it's still being debated in the scientific community. There are many theories that can explain it, including your "god" one. Some of the more-fact based ones are:

      http://en.wikipedia.org/wiki/Varangian_glaciation
      http://en.wikipedia.org/wiki/Greenhouse_warming
      and
      "The Cambrian Explosion has recently been a controversial topic regarding the history and evolution of life, with the idea posited that the Burgess Shale preserved such a wide variety of life and that the "Cambrian Explosion" was actually a slower radiation of animal forms than previously thought. The idea of an "explosion" of life in the Cambrian period is still being debated."
      Taken from:
      http://en.wikipedia.org/wiki/Cambrian_explosion

      and if you call all disproved scientific ideas "religion" then you can say that all bad ideas are religious,
      Sounds good to me, as religion relies heavily on faith, and faith is really just someone taking guesses.

    6. Re:Don't forget ... by jellomizer · · Score: 2, Insightful

      There is a point in that. But it is for a differnt method. Even if you beleave in God but when you are doing science you can't say my theory will work because God will make it work, sience there is no scientific proof in God we shouldn't use God as part of the equasion. But it is wrong to close off the idea that God could exisit because there is no proof that he does, because there is no proof that he doesn't. But for a real Sciencetist to proclaim that "God Doesn't exist and anyone who still beleaves is stupid." Will need Proof to she that he doesn't exist. It is basic math.

      IF (This) Then (God Exists) Does not nessarly equal If !(This) Then (God fails to exist) in Math this is called a Converse Error and is one of the most common mistakes made in proving things.

      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    7. Re:Don't forget ... by Anonymous Coward · · Score: 3, Interesting

      There is [no] scientific way to prove that God Does or Does not Exist.

      Actually, there is.

      If the skies opened up, and a heavenly choir of angels descended, and a load booming voice shouted "I am the Lord your God, the God of Abraham and Moses!", and scientists ran out and checked for loud speakers and mass halucinations and a whole bunch of other alternate explanations, the existance of God could be proven to the same extent that evolution can be.

      But without cooperation from the Big Guy and daily lightning strikes on the sinners, you're right. There is no scientific way of proving or disproving the existance of a God who doesn't do anything.

    8. Re:Don't forget ... by Surt · · Score: 3, Funny

      Double blind study for finding out if tcopeland's parents (TPs) love him:

      1) Foundational assumptions: people prefer to save the life of someone they love over someone they do not love.

      2) Methods: a series of pairs of people will be introduced to TPs, and they will be asked to press a button to save one of the subjects' lives. To avoid conditioned response problems, a series of at least 10 initial pairs will be introduced not containing tcopeland. If TPs fails to press one of the buttons, both subjects will be killed.

      3) Theory: when a pair containing tcopeland is introduced, TPs will press his button to save him. tcopeland will be introduced in at least 10 pairings over a course of approximately 1000 total pairings to test against the hypothesis that TPs are choosing buttons randomly.

      4) Double blind controls: pairs will be selected randomly by computer, and assigned to random buttons also by computer. Rooms will be soundproofed, and viewing of the pairs by TPs will be through one way mirror. TPs will be isolated from the researchers during the experiment. Researchers performing the experiment will not know which subject is tcopeland, and tcopeland will be kidnapped off the street like all the other subjects so that he will not know that TPs are in charge of the buttons.

      See, it's not that hard to design a double blind study to establish that your parents love you.

      Getting it past HSB, that's the challenge.

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    9. Re:Don't forget ... by zalle · · Score: 2, Informative

      (And yes you do need to prove one or the other, and make your proof solid so no one can come up with arguments to it, otherwise it is just a theory not scientific fact)

      Umm, there are no such things as scientific facts beyond the theory, except in logic, philosophy and mathematics. Science is mostly unprovable because of the way logical induction works. And besides, even if something is called a "theory" doesn't mean that it's something completely ephemeral and without any relevance or that it doesn't match the observed world very well. For instance, the theory of evolution is just that, a theory, and cannot be proved in any logically binding way. Yet it explains a lot of the phenomena we have observed, and after some revisions hasn't yet been falsified.

    10. Re:Don't forget ... by DunbarTheInept · · Score: 3, Interesting


      to say there is no god (atheist), to say that I don't believe in a god until his existense is proved (agnostic)


      That's not really what those terms mean. "Atheist" is a wide term that means "I don't believe there is a god" - this umbrella then also ends up including those who go one more step to saying "I believe there is no god." "I believe there is no god" is a statement that is true of only a subset of atheists, and it's not a very large subset, actually (in much the same way that fundamentalists are a subset of Christians, but not a very large subset). It's just as wrong to assume all atheists have a strong belief there is no god, as it would be to assume all Christians are fundamentalists.

      "Agnostic" is about knowelge, not belief. There is some overlap between "agnostic" and "atheist". It is possible, for example, to say "I don't think it is possible to really know for sure if god exists or not. However, using Occams' Razor in this situation I think the burden of proof is entirely on the one who says god *does* exist, since they're the one introducing extra entities that don't simplify things any. Therefore if no knowlege is possible, I'm going to take the guess that god is probably nonexistant, and thus refrain from believing in him." Such a person is BOTH an atheist and an agnostic. It's what I am, and I'm not the first person I came across with that exact stance on the issue.

      In theory, there could possibly be a god. However all the major religions are nothing more than random guesses as to what properties that god might have. As random guesses taken from a pool of infinite possibilities, the probability of any of them being even remotely close to correct is infinitessimally close to zero. At least that's the way I see it. If there is a god, then there is still a high chance that 100% of theists guessed wrong as to what it is like. In fact, I think that the chance of 100% of them being wrong is almost infinitely greater than the chance of even one individual among them being right.

      --

      Don't label something "offtopic" unless you know the topic well enough to tell what's on topic.

    11. Re:Don't forget ... by hesiod · · Score: 2, Funny

      > Love leaves proof.

      Don't I know it. Next time, I'm using a condom.

  3. don't forget about darwinist programming by Knights+who+say+'INT · · Score: 4, Informative

    i.e. genetic algorithms.

    GA's are used to maximize arbitrary functions by a mixture of random mutation and crossover between the solution candidates with better aptitude.

    It's hot stuff, and it comes up with good solutions for analytically untractable problems.

    1. Re:don't forget about darwinist programming by devillion · · Score: 2, Insightful

      Why bother with GAs. They just special cases of baysian inference. Say you want to find out probable good values for x (optimization, something else). Define p(x) (starting population in GAs) Define p(d|x) (related to goodness function of GAs) sample from p(x|d)~ p(d|x)*p(x) (natural selection). this is information theoretically optimal (H(X|DATA) = H(X) - I(X,DATA) so it isn't surprise that natural selection does something very close to this.

    2. Re:don't forget about darwinist programming by wwest4 · · Score: 2, Insightful

      > Why bother with GAs. They just special cases of baysian inference.

      Classify GAs however you want - we bother with them because they are useful in finding solutions.

      This is like saying "why bother with the Fourier Series - it's just a special case of the Fourier Transform." Feh.

    3. Re:don't forget about darwinist programming by Tablizer · · Score: 2, Insightful

      GA's are used to maximize arbitrary functions by a mixture of random mutation and crossover between the solution candidates with better aptitude. It's hot stuff, and it comes up with good solutions for analytically untractable problems.

      The hard part is usually coming up with a good "gene string" representation. For some things it is fairly simple, but not others.

      The simplest I have seen are robot "path" indicator strings. For example, "LRFBRRRL..." Where L=left, R=right, F=forward, and B=backward by say one foot. The problem is that the work-space (simulated or real) generally has to be tolerant to errors such that some reward is still given for partial failures. If the entire string has to be good before any score is acheived, such as the robot having to reach the final goal or it gets zero, then GA won't work very well.

  4. So then a first post... by Tebriel · · Score: 4, Funny

    So maybe a First Post really does matter then.

    Wow.

    --
    The Blaster Master Fighting for Truth, Justice, and Evil Pie since 1979
    1. Re:So then a first post... by SnapShot · · Score: 3, Funny

      Oh, so THATs why you can't post and moderate on the same article.... it's quantum mechanics at work!

      --
      Waltz, nymph, for quick jigs vex Bud.
  5. If he only knew by confusion · · Score: 3, Funny
    Good ole' Chuck Darwin had no idea the types of things that would bear his name.

    Jerry
    http://www.syslog.org/

    1. Re:If he only knew by Daniel+Dvorkin · · Score: 2, Interesting

      *shrug* "Social Darwinism" is an unfortunate construct, especially since the people who advocate it have a high crossover with the people who fight against teaching actual evolutionary biology in public schools. But noting that the principles of evolution apply to non-living as well as living systems, and calling those things "___ Darwinism" in general, seems reasonable to me.

      That being said, there's one thing I couldn't decipher from the article (yes, I did RTFA): are these preferred quantum states pre-existing, or do they change, sometimes coming into existence by random processes where they didn't exist before? IOW, is there any equivalent to mutation in this "evolutionary" system? If there is, then it's probably reasonable to consider it Darwinian; otherwise, it's not.

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
  6. I believe in it by AtariAmarok · · Score: 3, Funny
    I belive in subatomic Darwinism. So much, in fact, that I have an emblem of a Darwin fish consuming a proton on the back of my car bumper lid. Go ahead and look: it is microscopic.

    (Below this, on the bumper, is a sticker that says "if you can read this, you are too close or you are trying to see my Darwin deck-lid emblem")

    --
    Don't blame Durga. I voted for Centauri.
  7. An answer looking for a problem? by rokzy · · Score: 3, Interesting

    the fact that observation changes a system doesn't require everyone sees massively different things, so an explanation of things being not massively different seems unnecessary.

    if there is a box containing a red pen and a blue pen and I "observe" it (e.g. shake it about), it will have a different configuration but will still be a box containing a red pen and a blue pen.

  8. Nothing new here... by Cynical_Dude · · Score: 4, Insightful

    So observers coming along and looking at the environment in order to get a picture of the world tend to see the same 'preferred' states.

    Techno-speak for "rose-tinted-glasses"?

    Seriously though, thinking about it makes your brain hurt: Did the scientists working on this create the necessary state "they preferred" inadvertently in order to discover the state they wanted to see?

  9. quantum complexity? by mshiltonj · · Score: 3, Interesting

    It's time to Revisualize the universe.

  10. So what they are saying by farmgeek · · Score: 3, Interesting

    Is that some quantum states are more stable and are more likely to occur at any given moment than others?

    I didn't realize this was new. Maybe the news is that they have a "proof" of this now?

  11. Abuse of the term "Darwinism" by ites · · Score: 5, Insightful

    What's next... "market darwinism" when the products people buy survive?

    No. "Darwinism" is about replicators, i.e. organisms that reproduce and that compete for resources.

    When used for "Social Darwinism", the word implies that societies reproduce and compete for resources. In many ways this is accurate. You could use "darwinism" to describe many kinds of replicating, competing natural systems.

    But quantums...? WTF?

    Until we have evidence that quantums are actually lifeforms, the word "Darwinism" is simply not valid.

    Anyhow, and on a different note, quantum mechanics is easy. Here's Ites' Dummies Guide to Quantum Physics: matter and energy are made of wavelets, a string of energy. Wavelets look like particles when they're compressed by time or distance. Measuring a wavelet changes it. Wavelets do not breed and they do not compete for resources.

    The table is not solid because it's an agreed reality. The table is solid because your hand cannot pass through it. /me needs more eggnog

    --
    Sig for sale or rent. One previous user. Inquire within.
    1. Re:Abuse of the term "Darwinism" by Stile+65 · · Score: 4, Interesting

      If a quantum state changes upon being observed, and it does, then it has a 'successor' state. The 'stable' states are actually the ones which have 'successor' states that are very similar to themselves, no matter what type of observation is made. This makes a state appear stable, as observation only changes it to another copy of itself. This basically allows for states to 'evolve' into stable states.

      Think of Conway's Game of Life. You can start with a bunch of random cells, and eventually they'll "evolve," according to rules much simpler than those of quantum mechanics, to either stable structures or structures that move/change in stable ways.

      --
      I claim first use of "Error No. 0B" - or "No. 0B error." It'll be the new ID 10T!
    2. Re:Abuse of the term "Darwinism" by SMQ · · Score: 2, Insightful

      I disagree:

      You could use "darwinism" to describe many kinds of replicating, competing natural systems. But quantums...?

      Without observation, a qunatum system "is" in a large number of states simultaneously (a la Schroedinger's cat). Think of these states as all competing, not for resources in this case, but for observation. Moreover, an act of observation introduces purturbations into the system, much like the biological act of reproduction.

      What these physicists proved, then, is that over time the random purturbations of observation push the system toward a stable point--the "fittest" quantum state. Since these observations happen many many bajillion times a second most qunatum system converge very quickly, and by the time anybody gets around to looking they all see the same "objective" reality; the "fittest" stable quantum state.

      Yes, it's not truly biological--it's only an anaolgy, after all--but I think it's an apt one.

      --
      SMQ 90AE4B2BC4F6BEAF7340F0B40BA2DEF7340F6BC2D0392
  12. Quantum what? by JossiRossi · · Score: 5, Interesting

    I'm not a physicist so you can shut me up at any time. But I thought the "observation changes the object" was only true because to observe you you have to toss energy at it and see what happens. Then the act of tossing the energy changed it. How does this mean that "looking at Buckinham Palace" would do anything ever? You just look at it. Being aware of an electron does not make it change. What you do to the electron to know it's there is what changes it. I suppose I don't really know, so I won't claim to.

    Oh by the way if we all percieve that the reality of quantum physicists is to disappear, I think they would disappear... or at least make themselves disappear to prove their own points.

    --
    Just a boy doing unproffesional IT work that's way above his head.
    1. Re:Quantum what? by doug_wyatt · · Score: 5, Informative
      There are really two kinds of "measuring affects things" at play. The first is more understandable by the lay person - when you look at buckingham palace, you're not changing it, but you're changing the photons that had reflected off it. Had you not looked, your eyes would not have been in the way and absorbed them, so they'd have continued on. In a more general sense, to detect anything, be it the velocity of a particle, the location of a particle, the energy level of a particle, etc., you need to do something to it that affects something about the particle.

      The other kind "measuring affects things" is a little harder to grasp, and is exemplified by the schroedinger's cat example. There are situations where a particle/system/etc. can probabalistically be in one of several states. But until someone or something measures it to determine which state it is in, "the universe hasn't decided yet". So it's kind of like telling someone "I'm thinking of either a car or a dog" and not really deciding which one you're thinking of until someone asks you to tell them which it is. It's not the case that someone really has to look at it for it to "determine" itself - something about the universe could depend on the state, which is as good as an observer looking at it.

    2. Re:Quantum what? by Fnkmaster · · Score: 2, Insightful

      Being aware of an electron does not make it change.

      That's not quite true. The thing is quantum mechanics is probabilistic... so that electron is, in general, in some superposition state before you "become aware" of it (i.e. measure it). This means there is some chance it's in state A and some chance it's in state B when measured.

      But such superposition states have actual physical consequences as well (probability interference, wave-like properties). Anyway, once you "become aware" of that electron, it is in some exact and certain state. Your measuring inherently changes the state.

      This leads to insane arguments and discussions, since the electron (well, more likely a photon in this case, so let's call it such) is used to measure Buckingham Palace, then the photon interacts with your retina to create a measurement event then the pulses carry information to your brain.

      So when did the "measurement event" really occur? When did the waveform collapse into a fixed state? Why does consciousness or awareness of quantum states seem to play a fundamental role in quantum mechanics? This must be an artifact of the mathematics behind Q. Mech. and not a real physical phenomena, right?

      Unfortunately, as far as I know, there are no really good answers forthcoming from the physics community about these issues. Physicists don't really seem to agree nor do they really care what is meant by "measurement" from a philisophical point of view (e.g. "why do you ask this question, foolish student, can't you see the observation operator is applied to the quantum state, thereby collapsing the waveform?").

      Don't take quantum mechanics too seriously - like everything else in physics, it's a great model for answering questions in a certain domain, but it says nothing about the answers to questions outside its domain. Advanced theories, like quantum electrodynamics and quantum field theory have more to say about this topic, I'm sure, but likewise surely leave equally large gaps in knowledge.

    3. Re:Quantum what? by Tyler+Durden · · Score: 3, Insightful

      "Every time I hear about Schroedinger's Cat, I reach for my gun." -Stephen Hawking

      I think there is a mistaken idea out there that observation alone fixes certain information about sub-atomic particles while the particle is in several states simultaneously beforehand. The problem is with dependence on observation for collapsing the wave form. If this were true, the only cause was observation, then what would count for an observation? How intelligent would the thing causing the collapse have to be to be considered an observer? Can an ape collpase a wave-form? How about a cat? Does it have to be a living thing at all?

      Yes the particle holds many states simultaneously at certain times, yes it becomes fixed when an action happens from which an observer can deduce the state in question (whether or not said observer is there to witness it), but no, an actual observer doesn't have to be there to see it at the time for the wave-form to collapse. That's what's ridiculous about Schroedinger's Cat. Once the quantum event which may or may not kill the cat happens, the sucker is alive or dead - period. We just don't happen to know which until we look.

      I'm no physicist but that's the impression I get from what I've read. Anyone want to comment?

      --
      Happy people make bad consumers.
    4. Re:Quantum what? by Decaff · · Score: 3, Informative

      I'm no physicist but that's the impression I get from what I've read.

      You are getting a right impression from what you have read, but what you have read is just one rather old-fashioned view of Quantum Mechanics (it's called the Copenhagen Intepretation). There are plenty of alternative (and equally valid) interpretations that don't require any waveform collapse by observation. These include the Many Worlds Interpretation, the Transactional Interpretation (my favourite) of John Cramer, which implies that particles exchange information back and forth through time, and the ideas of Roger Penrose which suggest that quantum states collapse to a single one of the alternatives when the states differ sufficiently in energy to cause significant spacetime curvature.

      My view is that at this time, it's foolish to pick any single interpretation of quantum mechanics (such as collapse by observation) and assume that it has any reality. We just don't know enough.

    5. Re:Quantum what? by tgibbs · · Score: 3, Informative

      I'm not a physicist so you can shut me up at any time. But I thought the "observation changes the object" was only true because to observe you you have to toss energy at it and see what happens. Then the act of tossing the energy changed it.

      This was an early rationalization of the experimental results, but the truth turns out to be more general than that. Physicists have gotten much cleverer in working out ways of gaining information about a system without perturbing it, and the results still hold. (Think of Sherlock Holmes's dog that doesn't bark in the night). But it is not clear whether observation changes the system being observed or the rest of the universe, or even whether that is a meaningful distinction. Another way of looking at things is that observation couples the quantum states of the system being observed with the quantum states of the observing system. So once the Schrodinger's Cat box is opened, all "dead cat" states becomed coupled with "bereaved experimenter" states, which do not appreciably interfere with the "live cat" states that are coupled with "relieved experimenter" states.

    6. Re:Quantum what? by The_Wilschon · · Score: 2, Insightful

      One minor nit-picky point: The "particle" does not "hold many states simultaneously." It is in one state. period. That state is some linear combination (weighted sum) of various quantum eigenstates, but it is only in one state at any time.
      When you say "it becomes fixed," you are referring to the collapse of the wavefunction when it is observed. What it collapses to is one of these quantum eigenstates.

      You've got a rather basic understanding of the gist of it, but there are some details which you had wrong.

      --
      SIGSEGV caught, terminating

      wait... not that kind of sig.
  13. Same nonsense different century. by TheNarrator · · Score: 3, Insightful

    So observers coming along and looking at the environment in order to get a picture of the world tend to see the same 'preferred' states.

    Sounds a lot like Solipsism which is nothing new at all.

    Solipsism is the belief that, because we can only verify our own experiences and no-one elses, only the self is real.

    or to put that in Layman's terms: "Go away, you don't exist!"

  14. Don't tell... by jacobcaz · · Score: 4, Funny

    Schrodinger's cat, it's going to be pissed.

    1. Re:Don't tell... by mfender9 · · Score: 2, Funny

      or will it be both pissed and pleased?

  15. Don't observe this post by pegr · · Score: 5, Funny

    It wasn't a troll until you looked at it. Nice going...

  16. i'm confuzzled by moosesocks · · Score: 2, Funny

    wow. my head hurts from reading that abstract..

    I perfer Terry Pratchett's definition of 'quantum' where scientists label anything too confusing for them to understand as being 'quantum'

    "What're quantum mechanics?" - "I don't know. People
    who repair quantums, I suppose."

    --
    -- If you try to fail and succeed, which have you done? - Uli's moose
    1. Re:i'm confuzzled by stratjakt · · Score: 2, Funny

      That's what string theory is for.

      Any cosmic thingamajoo that doesn't fit in with what we're told.... String theory.

      Ie; There isn't enough matter in a galaxy to keep it together via gravity. What keeps a galaxy together? String theory and dark matter!

      How? You're no astro-quantum dood so you wouldn't understand. It's done with strings. Shut up and sit down.

      --
      I don't need no instructions to know how to rock!!!!
  17. Stephen Hawking by bill_mcgonigle · · Score: 5, Interesting
    Reminds me of this passage from A Brief History of Time
    by Stephen Hawking:
    "He [the pope] told us that it was all right to study the evolution
    of the universe after the big bang, but we should not inquire
    into the big bang itself because that was the moment of Creation
    and therefore the work of God. I was glad then
    that he did not know the subject of the talk
    I had just given at the conference - the possibility
    that space-time was finite but had no boundary, which means that it
    had no beginning, no moment of Creation.
    He goes on to talk about how time curves back on itself as it approaches zero (stuff I'll never understand). So, basically the Catholic Church has conceded the time since the Big Bang to Science, excepting the occasional divine meddling. Of course, such meddling would imply the Great One couldn't design a universe that ran according to The Plan without intervention - such impudence.
    --
    My God, it's Full of Source!
    OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
    1. Re:Stephen Hawking by babyrat · · Score: 2, Funny

      Of course, such meddling would imply the Great One couldn't design a universe that ran according to The Plan without intervention - such impudence.

      TAKE IT BACK!!!! Wayne Gretzky can do ANYTHING!!!!

    2. Re:Stephen Hawking by bill_mcgonigle · · Score: 2, Insightful

      No, I'm saying that a Supreme Being won't be able to guess what choice you will make.

      Then he's not an omniscient Supreme Being.

      --
      My God, it's Full of Source!
      OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
    3. Re:Stephen Hawking by StarsAreAlsoFire · · Score: 2, Interesting

      I used to agree 100%, however times change. Now it is more like 90%. For reference, I don't agree with the religious aspect either. Moving on to the point:

      When we 'use' quantum computers (yes yes, don't have working ones yet... the THEORY however..>), what are we doing? We are playing at a bogo sort for an answer, kind of. We create EVERY instance that could possibly exist... and destroy all those that don't answer our question. Very simplified, but this is me, on /., on a PC. Want more read a book. The POINT, however, in this context is highlighted by the above: what if 'God' created (or is?) the quantum computer? Then every possible path for eternity is perhaps being played out? Thus free will in an individual frame is preserved, however 'God' is still omniscient.

      I don't really believe in a created universe. I like playing devils advocate though. And the subject of religion mixed with quantum physics is just *begging* for good discussions :~)

    4. Re:Stephen Hawking by MindStalker · · Score: 2, Insightful

      Its not so much that there must be an observer, but simply that the act of observing (which in order to observe a particle you must either capture that particle or bounce something off of it) changes it. Which in reality makes a lot of sense. It still exist without said observer.

    5. Re:Stephen Hawking by MindStalker · · Score: 2, Interesting

      Yes interacting collapses wave forms, but one method of observing is to bounce light off an object, thus collapsing its wave form then capturing the photons as they come back. Well photons from natural sources such as the sun will still bounce off objects even without an observer. Or a rock being an observer of the bounce will capture and effect the photon and stop other observers from receiving the same information. Its more about the fact that said observers don't have to be intelligent.

  18. what are they talking by izzo+nizzo · · Score: 3, Insightful

    How do they address this:

    There's no way to know exactly how similar different people's perception of the same scenes is;

    Quantum-level variations resulting from observation and whatever else are not likely to make a noticable difference in these scenes.

    The idea that trees are tending to appear the same way because their particles find their way back to the same place after being displaced by observations isn't implausible, but without further establishing the potential for a contrary situation it seems like overkill!

    Good thing they "mathematically proved" that they're right, heh heh.

    1. Re:what are they talking by NoMoreNicksLeft · · Score: 5, Funny

      Quantum darwinism is false! The tree is that way because God made it that way, not because 4 billion years of quantum evolution positioned its particles that way!

      We need to stop teaching quantum darwinism in our schools, and teach quantum creatinism! Darwin himself denounced quantum evolution on his deathbed, it's true!

    2. Re:what are they talking by miskatonic+alumnus · · Score: 2, Funny

      Quantum Cretinism???

    3. Re:what are they talking by NoMoreNicksLeft · · Score: 2, Interesting

      Evolution doesn't suggest that every living thing shares an ancestor, not even necessarily when you limit it to the one planet we reside on (though the vast majority of life does share a common ancestor). Whatever mechanism allows for life to spontaneously develop likely was activated more than once. It's even possible (though not likely) that we'll discover some unicellular organism somewhere in an ocean vent that doesn't share an ancestor with us.

      Science has always assumed that A) somewhere in the universe there is alien life B) that life arose in a process vaguely similar to however it arose on earth and C) that God has nothing to do with it. And before you go after me with a vengeance about what science does and doesn't assume, those assumptions are made just waiting to be disproven, should it ever be possible to do so.

  19. Finally! by SpacePunk · · Score: 2, Interesting

    This sort of thing has been a theory with me for years. All 'reality' is based on single and shared observation. Person A views everything a certain way, Person B views it another way. What we 'see' in our reality is the overlapping realms between persons A and B (for instance). In other words, the universe is touched and changed by observation. Humanity as a whole shares and expected result of reality which is the baseline norm.

    Quantum physics is just the microcosm if the greater universe. Looking for a particle? Create it. Do the math, theories, etc... Then 'look' at it and there it is! The greater the number of believers that the particle exists, the greater chance the particle will be observed. The big question is "Did the particle exist before, or did it come into existance because shared reality expectations amoung observers cause it to come into existance?"

    I know there will be those that totally don't understand, and those that will detract, but quantum physics is where science, philosophy, and religion tend to meet. There are few that feel comfortable with that thought.

  20. Be suspicious by drgonzo59 · · Score: 2, Interesting

    This is sounds like pseudoscience to me and someone feeling the need to invent some new crazy thing to get a PhD thesis going. This all stems from applying different intuitive "explanations" to the results of the quantum physics. The math works out alright but it seems that people have a need to understand and have an intuitive plan or schematics in their head. The computer scientist might imagine an array as a bucket or a counter with items on it. The electrical engineer might think of the current as water flowing through the wires etc. This seems to work up to a point. Quantum physics on the other hand doesn not seem to have any decent intuitive explanation that everyone's mom or uncle can read in a "how stuff works" book and have a clear grasp of what is going on. This hasn't stopped physicists from applying different interpretation to the quantum phenomena based on classical world. The authors from the article in Nature adopted what I believe is called Copenhagen Interpretation, where a state of the system is changed by measuring it. So there is a distinction between the macroworld where the measuring device is and the quantumwold where the system being measured is considered. The problem is that the measuring apparatus itself lives in a quantum world and everthing else is part of a larger quantum world. Check out wiki for Copenhagen interpetation, which the authers seem to adopt and the many-worlds interpretation which might not work out so well for these guys. (look around in here). So take these nice new ideas with a grain of salt. If you want to know that happens go through the math at least 3 times and then all you see is the math which everyone seems to agree on.

    1. Re:Be suspicious by internic · · Score: 2, Interesting

      First of all, while I'm not familiar with the first author, the third author on the paper is Zurek, who is one of the formost experts in the field of quantum decoherence, not some grad student fumbling for a dissertation topic. Secondly, the work on quantum decoherence is not just a matter of interpretation. There are real questions as to how and under what conditions quantum coherence is lost in a system and classical features emerge. It's not just an esoteric problem and has applications to mesoscopic physics (chemistry, nanotech, semiconductors) and is vital to the developement of quantum computation.

      --
      "You call it a new way of thinking; I call it regression to ignorance!" -- Operation Ivy
  21. Quantum Effects at Large Scale by bill_mcgonigle · · Score: 2, Insightful

    When I took physics, it was pretty clear that quantum effects are negligible at large scale. For instance, I have a wave form as I'm sitting in this chair at my office. I don't really notice my oscillation all that much.

    So, for observation of the macroscopic environment it would follow that quantum effects can be ignored. But then again, I'm arguing against quantum physicists from Los Alamos, so maybe they're just explaining why quantum effects can be ignored at a large scale.

    Yet it would seem as simple as "observation of the individual particles of the windows at Buckingham Palace are affected by observation, but statistically speaking, each change is just as likely as the next, so at a macroscopic level the odds of a visible change are infinitesimal." Sure, there's a chance that a window could move but it's so unlikely as to never happen during the life of the universe. I RRTFA and don't see this.

    --
    My God, it's Full of Source!
    OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
  22. Buzzwords by internic · · Score: 4, Insightful

    The term "quantum darwinism" is really an unnecessary buzzword. There is a certain analogy about states which create many records of themselves surviving a robust pointer states where others are "selected against", but the analogy is really pretty limited and not very useful. It's better to stay away from using terms like darwinism for effect. I should note that I didn't see the word "quantum darwinism" in the title or abstract of either of the actual journal articles this news item references. For the lazy, the two papers in question seem to be this preprint and this article from the Nov 26 issue of Physical Review Letters.

    This sounds like an interesting result and Zurek is a premenent figure in the field of quantum decoherence, but this looks like the tying up of some (important) details rather than the revolutionary developement the news article makes it out to be. Even as far back as the work of Everett we had an idea of why two observers who compared notes would always agree on the objective facts. In the many worlds interpretation, this comes down to the fact that if observer A measures system S, there will be many different possible results. So there will be many branches of the wavefunction with A observing each possible result. When observer B measures system S, he becomes entangled with S and A, and there are many possible outcomes, but in each branch of the wave function A and B agree on the outcome. Not sure if that clears anything up. :-) If you're talking about purely quantum systems, the same thing happens in the Copenhagen interpretation. The only tricky part is how to think about it when A and B are "classical observers". Still, I haven't read these papers yet and now I'm eager to.

    --
    "You call it a new way of thinking; I call it regression to ignorance!" -- Operation Ivy
  23. Quantum Physics is Like 15th Century Astronomy by human+bean · · Score: 4, Interesting

    I suspect that somewhere it went wrong. Modern physicists are much like the ancient astronomers.

    These astronomers, believing that planetary orbits were circular, developed much arcane math and explanation as to why they couldn't completely account for the observed data. They could not imagine such a thing as an elliptical orbit.

    Modern physicists, believing that wavelets acted a particular way under certain observation arrangements, developed much arcane math and explanation as to why they couldn't completely account for the observed data. They could not imagine such a thing as a (insert reason here).

    I believe that somewhere along the way, a key piece of information may have been missed that would make all of this very simple. Lord knows, I could be wrong...

    --

    *whup* "Get along, little electrons. Heeyah!"

    1. Re:Quantum Physics is Like 15th Century Astronomy by rokzy · · Score: 5, Insightful

      >Modern physicists, believing that wavelets acted a particular way under certain observation arrangements, developed much arcane math and explanation as to why they couldn't completely account for the observed data.

      Quantum Mechanics is THE most sucessful and accurate theory ever. whereas the astronomers could not account for the data, QM accounts for the data to ridiculous accuracy and the only problem is accepting the interpretation. and that's a problem with humans, not QM.

    2. Re:Quantum Physics is Like 15th Century Astronomy by alienmole · · Score: 3, Informative
      QM accounts for the data to ridiculous accuracy and the only problem is accepting the interpretation. and that's a problem with humans, not QM.

      No, it seems more like a problem with current theory. QM is very accurate as far as it goes, but it doesn't give the whole picture, even in its own domain. Theories about the causes of decoherence - collapse of superposed states - are still very much under development, which explains why there's so much confusion about the subject.

      The naive and typically anthropomorphic idea that human or conscious observation has something to do with decoherence hasn't been credible for a long, long, time, and Nature (the magazine) deserves to have its ass kicked for allowing an abstract to pit its argument against such a nonsensical straw man. For an update on the most credible current work, a good starting point is The Role of Decoherence in Quantum Theory.

  24. MOD PARENT FUNNY, NOT OFFTOPIC by xlurker · · Score: 2, Insightful
    i don't see how the parent is offtopic,
    it's funny, laught

    it's a fitting example of darwinism taking place in the religious memesphere, each time the study of nature and reality shows that some silly religiously based idea can't be backed up, well then the idea gets appropriately modified to fit reality.

    Religions claiming to have special knowledge eventually get challenged and many get shown out the door. It's a sad testimony for some religions. And upsetting for the stringent by-the-letter followers.

    A fit religion will be one that sticks to the basics: faith, how to live with oneself, how to live with the world and other men. It will not made silly unnecessary assumptions about a reality that cares nothing for how we on the thin surface of a small planet see it.

    --
    ______________________________________________
    sigamajig...
  25. Stability by Renraku · · Score: 2, Interesting

    Its similar to natural selection.

    The more stable the configuration, the more likely it is to form and stay for long periods of time.

    --
    Job? I don't have time to get a job! Who will sit around and bitch about being broke and unemployed then?
  26. Re:Darwinism Schwarwinism by kirun · · Score: 2, Interesting

    Darwinian history of boygroups

    Well, don't boy bands work on similar principles to reproductive success? I'd suggest a large proportion of purchasers of boy band singles and albums wanted to reproduce with them. So past sales must measure percieved "fitness"

    What of the strange costumes in the '80s? Well, Zahavi's handicap principle surely comes into play here. Throw in some songbird research and you're done.

    --
    I'm scared of numbers that can't be written as a fraction. It's an irrational fear.
  27. Re:There's no such thing as "scientific fact" by Anonymous Coward · · Score: 2, Insightful
    The "why" can also be part of the realm of science. For example, that pumpkin you are dropping out of the airplane? You can use scientific knowledge of gravity to figure out why it falls and splats on Mrs. Kotzwinkle's Toyota in the Wal-Mart parking lot, instead of floating sideways.

    No, you can't figure out why it falls - you can only use scientific knowledge of gravity to predict how it should fall. And then you can observe whether or not it actually falls that way.

    And if it doesn't fall the way you predicted, you need to go find a new theory.

    You haven't answered why the value of G is what it is, or even why gravity exists at all. All you've done is predict the behavoir of two or more masses interacting and labelled the interaction "gravity".

  28. From the Article... by Boronx · · Score: 3, Funny
    Life itself would then be hard to conduct,

    Sure glad we avoided that problem.

  29. Here is the Problem by freepath · · Score: 5, Interesting

    This sounds very interesting, but is it just simply a strange twist on words? Mathematics can work out to many wonderful things, but the challenge is how and why the mathematics is applied. Methinks (and remembers as a physics undergrad) that conceptual theories such as quantum and relativity are very different from everyday life because they are special cases. Whereas in biology we learned that Darwin's theory of evolution was a general case.

    Let me explain: Quantum mechanics takes place in the realm of the extremely super small. Einstein's relativity takes place in the realm of extremely large values of velocity. There is a disconnect there in reconciling these two theories, thus the epic hunt for TOE, The Theory of Everything. The Holy Grail of physics is to find this super theory that unites relativity, quantum mechanics, electricity and magnetism, gravity, mechanics. Although relativity is used in quantum for calculations, there are some contradictions in reconciling the two theories, thus Einstein's famous quote (during his hunt to reconcile relativity with quantum), "God does not play dice with the universe!"

    It is my understanding that Darwinism, whether social, economic or of natural selection, takes place in all biological situations. Look around, and everyone will see that quantum mechanics is not something that happens around us! Do you see quantum wells on your computer screen? As you observe the movement of the train, does the Heisenberg uncertainty principle come into play? No! This uncertainty principle does not conflict with everyday life chiefly because it only applies to the special case of extremely small and extremely fast particles.

    So this comparison, extension and exercise of extending quantum mechanics to Darwinian proportions appears to me to be more than anything a philosophical exercise.

    1. Re:Here is the Problem by noidentity · · Score: 3, Informative

      Darwanism involves differential rates of replication of two or more differing replicators built from simpler materials. Evolution occurs over several generations, where the more efficient replicators come to outnumber the rest. Because they are built from simpler materials, there is room for slight changes (mutations), some of which will be beneficial.

      Take any of these elements away and you don't have darwinian evolution. I haven't read the article yet, so I don't know if it misapplies the term.

    2. Re:Here is the Problem by JohnsonJohnson · · Score: 3, Informative

      This sounds very interesting, but is it just simply a strange twist on words?

      No

      Let me explain: Quantum mechanics takes place in the realm of the extremely super small. Einstein's relativity takes place in the realm of extremely large values of velocity.

      No, relativity applies just as accurately to a garden snail as a laser beam and quantum mechanics applies to a neutron star just as much as an electron (in fact in many ways neutron stars can be considered large atomic nuclei). The disconnect between quantum physics and relativity comes from the fact that the former describes reality in terms of wave functions (although practicing physicists use a different, equivalent formulation in terms of fields) and the latter in terms of curvature tensors. Reconciling those points of view is the point of a ToE.

      The Theory of Everything. The Holy Grail of physics is to find this super theory that unites relativity, quantum mechanics, electricity and magnetism, gravity, mechanics. Although relativity is used in quantum for calculations, there are some contradictions in reconciling the two theories, thus Einstein's famous quote (during his hunt to reconcile relativity with quantum), "God does not play dice with the universe!"

      This is wrong on so many levels I don't know where to begin but I'll try. Neither quantum mechanics nor relativity have any problems describing electromagnetism (now more properly known as the electroweak force), there is no succesful theory of quantum gravity yet, but the creation of one does not require a ToE as far as anyone can tell, although a ToE will necessarily have a quantum theory of gravity as one of its consequences. Einstein's "God does not play dice..." quote was in reference to his belief in (now discredited) hidden variable theories which would attempt to remove some of the probabilistic aspects of quantum mechanics.

      Look around, and everyone will see that quantum mechanics is not something that happens around us!

      Aagh, my computer just vanished thanks to the impossibility of its existence! Given the physical nature of a quantum well (a system that traps a particle in a particular energy state, typically very small and cold) if I could see one I'd probably have several more pressing problems to address than my misunderstanding of quantum physics.

      As you observe the movement of the train, does the Heisenberg uncertainty principle come into play?

      Yes, but thanks to the fact that uncertainty in the product of position and momentum only has to be larger than Planck's constant divided by 2*pi and Planck's constant is a very small number in SI units given the relatively large errors in the equipment at hand for observing trains I can safely cross train tracks. Or to put it another way, the de Broglie wavelength of a typical train is so small as to be safely ignored.

      This uncertainty principle does not conflict with everyday life chiefly because it only applies to the special case of extremely small and extremely fast particles.

      To be precise, only when the de Broglie wavelength approaches the spatial extent of a system do quantum mechanical effects become significant. Similarly, although there is no equivalent to the de Broglie wavelength in relativity, when the energy of an object is smaller than a certain threshhold relativistic effects can be safely ignored.

      So this comparison, extension and exercise of extending quantum mechanics to Darwinian proportions appears to me to be more than anything a philosophical exercise.

      What's a Darwinian proportion?

  30. God plays dice ... by opencity · · Score: 2, Interesting

    but she can cold roll them anytime.

    Seriously, IANAP but ... according to quantum mechanics we do all percieve things slightly differently. The effect is only 'noticable' on a quantum scale because Plancks constant is so 'small' as compared to say Avogadros number.

    >> "The environment is modified so that it contains an imprint of the pointer state," he says.

    Which means that the photons (say) coming from one area and reaching another will statistically be similier at a level of accuracy attainable by the receptors(?)

    Or are they implying that some 'resonance' (my word) is conserving information that should, according to Copenhagen, be lost. I'm trying to read the paper but I'm charitably near the bottom of the slashdot education graph so someone please explain. The phrase 'Environment monitors certain observables' sounds like a macroscopic pov in a microscopic (quantum) discussion.

    --
    Physics is like sex: sure, it may give some practical results, but that's not why we do it.
  31. No fact of the matter prior to measurement by radtea · · Score: 3, Interesting


    The article is muddy and confusing, and makes a number of problematic claims, the most important of which is the claim that measurement changes the system measured. Within the orthodox (Copenhagen) interpretation of QM this is exactly the type of claim we want to avoid: prior to measurement, we can't say much about the system. We certainly can't say it "is" in any particular state or superposition--only that the outcomes of various possible experiments will follow the predicted probability distributions. To say the system "is" something prior to measurement is to load it with ontological baggage that just isn't justified.

    The article also makes a hash of the relation between collapse and decoherence, which are quite different things. Decoherence theory doesn't explain collapse--it replaces it by making it unnecessary. I'm a bit out of date on this stuff, but as near as I can tell decoherence theory is treading down the path to many worlds, and it's still an open question as to whether it will be able to avoid the well-known problems that await its arrival.

    --Tom

    --
    Blasphemy is a human right. Blasphemophobia kills.
  32. Re:Define ridiculous accuracy by JeanPaulBob · · Score: 4, Interesting

    Yes, Newtonian physics was ridiculously accurate, within the bounds of our ancestors' measurement precision. In fact, it was so accurate that we still use it today. When we looked closer, we found situations where it doesn't work so well, so we had to expand the theory to fit those situations. Specifically, we can't use Newtonian physics when there are extreme amounts of energy (relativity) or when the scale is extremely small (QM).

    But that doesn't make Newtownian physics invalid; it's correct, as an approximation. The maths of relativity and QM do reduce to Newtownian math outside those extremeties.

    To respond to your implication, no, this does not mean that QM is perfect. Just as we refined & expanded Newtownian physics, we may well have to refine & expand quantum mechanics. That's not a weakness, per se; QM still works almost everywhere we look. (The major exception is quantum gravity, the synthesis of relativity and QM; we don't have that figured out.) But QM still works astoundingly well. I can't imagine it will ever be shown wrong. Incomplete, sure, but not wrong.

  33. What's Going On? by trongey · · Score: 3, Funny

    Nobody has welcomed our Subatomic Darwinian Overlords yet!
    And don't expect me to do it for you.

    --
    You never really know how close to the edge you can go until you fall off.
  34. Take a QM class... by The_Wilschon · · Score: 3, Informative

    Seriously people. If you haven't taken a Quantum Mechanics class of some sort (or had some other real, solid exposure to the mathematics behind it) then don't even attempt to talk about it. Basically, 100% of all attempts I have ever seen to explain QM "conceptually" are complete and utter $hite, and have virtually no relationship to what the math really says. As far as I can tell, there is no good way to conceptually describe quantum mechanics. There are no good analogies. There are gillions of mediocre analogies, but if you really try to understand QM by means of these analogies, you're screwed. Because the analogies work for a small part of QM, and then break down if you try to get at all outside their range. So don't try to extrapolate anything from a conceptual discussion of QM. Don't try to take anything from it other than face value, because you will get it wrong. And in many cases, (such as this one) you will not even get it right from face value.

    Case in point: TFA talks a lot about observations. But they also talk about people looking at trees and buildings. You looking at something really doesn't constitute an observation (Quantum mechanically). The photon interacting with the tree (building, etc) is the observation. The photon entering you eye, interacting with your cornea, your lense, and finally your retina is another "observation." But you looking at a tree does not change the tree.

    Go read the actual papers referenced by the article, these will actually contain science, and not some journalist's misunderstanding of it.

    BTW- IANA physicist... yet. I am halfway through my third year of undergrad physics work. One of the classes I just finished was Intro to Quantum Mechanics I. Just to establish my credentials. If anyone who is a physicist with more education in the subject disagrees with what I have said, I would be glad to talk to him. But if you haven't had any QM class.... shut up. Please. Trust me, unless you have had exposure to infinite dimensional linear algebra and partial differential equations, you do not know what you are talking about.

    --
    SIGSEGV caught, terminating

    wait... not that kind of sig.
  35. Do the Math by JohnsonJohnson · · Score: 4, Insightful

    There are a host of comments to the effect that Quantum Physics is ad hoc a la Ptolemaic epicycles, or that the research described is pseudo-science etc. First of all Quantum Physics is not ad hoc, nor does it have any relationship to Ptolemaic epicycles. It is grounded in well established axioms and which have proved themselves spectacularly successful in describing physical reality up to and including the physics of the semiconductor devices which commenters used to demonstrate their astounding ignorance and pride therein.

    The problem modern physicists face is that the mathematics of Quantum Physics does not obviously lend itself to description in terms of everyday experience. Most people do not have every day experience with superpositions of states nor do they navigate their existence using that model which leads to a disconnect between the mathematics of Quantum Physics and "common sense". That doesn't make the math wrong, it merely indicates that we have adapted to living in a world in which quantum effects can be safely ignored, unless one is trying to make 0.6 micron scale transistors for Slashdotters to abuse.

    The research in question actually goes a long way to explaining why it's OK to ignore the quantum nature of reality above certain scales. In short, among the states that a large ensemble of subatomic particles, like Buckingham Palace, can be in there are states which are relatively resistant to large perturbations by observation. Fortunately for the occupants of Buckingham Palace those states tend to describe a palace comoving with the Earth's surface in London, England, and not a palace hurtling towards the sun at a significant fraction of the speed of light. This is a brutally oversimplified plain English explanation of the results, which can only be precisely stated mathematically, and thus likely to lead to significant misunderstanding. Ironically, the research goes a long way to explaining why another reader and I can both agree on the form of the letters of this message.

  36. Re:Define ridiculous accuracy by alienmole · · Score: 2, Interesting
    But QM still works astoundingly well. I can't imagine it will ever be shown wrong. Incomplete, sure, but not wrong.

    There are different ways to be wrong. A decent mathematician today could easily work out a perfectly accurate theory of planetary orbits in which the Earth is at the center of the solar system. The predictions about orbits would all be perfectly correct. Like the epicycle-dependent orbital theories developed by the old astronomers, the system would be ridiculously complicated, but it would appear to be a perfect fit with observation. Would such a theory be wrong or right?

    In light of this, all we can say about QM is that QM is right in the sense that it's an accurate model of certain phenomena. It could still be entirely "wrong" in the sense that it might be misleading us about the phenomena which it models, analogous to the way in which a theory of epicyclic orbits would mislead us about the solar system's structure.

    Note that I'm not drawing any conclusions about QM in this respect, I'm just saying that the idea that QM could turn out to be wrong in some important ways is quite feasible.

  37. God of the Gaps: Glass half-full or half-empty? by Tackhead · · Score: 4, Insightful
    > This is known as the "God of the Gaps" approach; God is assigned responsibility for whatever science can't currently explain. As you point out, the problem with this approach is that God keep shrinking as the gaps get filled in.

    Is the glass half-full or half-empty?

    God, 1200 AD: "Big guy created the whole thing 5200 years ago."

    God, 1800 AD: "Clever big guy created the whole thing 5800 years ago. And had to plunk some planets and set up an inverse square law for gravitation. And bury a bunch of weird lizard fossils to confuse us. Either that, or he's been doing some really weird tricks with biology that we're only beginning to guess at."

    God, 1950 AD: "Really clever guy (way cleverer than us) created the whole thing out of, umm, something, we don't really know when, but it was a hell of a long time ago, and made particles that behaved like, umm, waves. It's weird and violates common sense, but we can use the math to make televisions. And BTW, now we know how the Sun works."

    God, 2004 AD: "Supremely clever dude, existing completely outside of what we perceive as spacetime, may have tweaked an m-brane collision (the math for which only a few hundred of us on the planet can even begin to understand) that resulted in the setting of a few universal constants for the physics engine and the creation of a little bubble of spacetime. Sat back and watched the resulting fireworks for 13.8 billion years to see if sentient life would evolve in a little pocket of it and recognize Him."

    Without taking a position either way on the existence or non-existence of God, I humbly submit that the more science we do, the smarter the "God of the Gaps" has to be.

  38. what i hear when i read this stuff by circletimessquare · · Score: 2, Funny
    The hollow Time Cube in which the 4
    quadrant corners of Earth rotate, equates to
    your 4 corner bedroom, or to a 4 corner
    classroom which represents the 4 corners
    of Earth - in which stupid and evil pedants
    teach dumb students 1 corner knowledge.
    Each of the 4 corners of Earth is the
    beginning and ending of its own separate
    24 hour day - all 4 simultaneous days within
    a single rotation of Earth. Place 4 different
    students in the 4 corners of a classroom and
    rotate them 4 corners each. Note that they
    rotate simultaneously wthin the same Time
    frame as if only one is rotating - just as the
    4 different days on Earth rotate. 3D math
    applied within this hollow Cube would be
    erroneous math, as it would not account
    for the 4th corner perspective dimension.
    Place a 100 people within this Cubic like
    room and they will not increase the number
    of corners anymore than 6 billion people on
    Earth will increase the 4 corners of Earth.
    It is dumb, stupid, evil and unworthy of
    life on Earth to claim that this Creation
    Cube has 6 sides - or no top and bottom.
    Academia equates to a deadly plague.


    i am not saying that the argument for quantum darwinism is as crackpot as the timecube guy, what i am saying is that both the timecube guy and the argument for quantum darnwinism are way over my head ;-P
    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
  39. What does it mean? by Odocoileus · · Score: 2, Funny

    All I really want to know is if we are any closer to the day when I can alter reality. Without drugs.

    --
    ...
  40. Now that explains somethings by deadline · · Score: 2, Funny
    ...the world would be very unpredictable: different people might see very different versions of it. Life itself would then be hard to conduct, because we would not be able to obtain reliable information about our surroundings... it would typically conflict with what others were experiencing.

    Curious, this is how I experienced the US election last November. I'll blame it on TV.

    --
    HPC for Primates. Read Cluster Monkey
  41. Re:Science cannot disprove the Bible by forgetmenot · · Score: 2

    You say there is proof that the world is older than 10,000 years, but you fail to consider that God could have made everything look like its that old. You also fail to realise that a day of God's time isn't the same as a day in man's time.

    But this makes no sense even from a biblical perspective. Sure god could have made the world look old - but why? Either the bible is wrong and therefore a work of man, or "God is deceitful" (what else would you call making something look like what its not) and the whole notion of "choice" a facade.

    "Hey have faith and believe in what I've said through my 'faulty creations' (remember, only 'god' is perfect, Moses et al are not) despite my also creating a world in which I've gone to great lengths to not just 'hide the truths' that I'm telling but also making it appear that the oppostite of what I say is true! Bwahahahaha!".

    If the bible is fact, then one must come to the conclusion that God has created a system whereby only the deaf, blind, and ignorant are admitted to heaven. The "smart" ones who try to interpet what they "see" and "feel" in the world he created and get "suckered in" by God's own illusions, are denied admittance. Sounds pretty inane to me, and thus following the principle of "Occam's Razor" I reject this interpretation for the simpler one: The creation story given in the bible is 'wrong'.

    Hell, even the Vatican (arguably the institution with the greatest vested interest in literal biblical interpretation) doesn't accept creationism anymore.

    But if people insist on believeing in God then perhaps this explanation will suffice: God realized his creation at that moment in history was too primitive to grasp the truth and made up a "child-like" explanations just too satisfy their curiosity until they progressed enough to explore the truth for themselves.

  42. Suggested Reading: Quarantine by Greg Egan by Post · · Score: 3, Interesting

    There is an excellent novel by Australian Science Fiction author Greg Egan called Quarantine (Wikipedia entry/Amazon) on this subject. I cannot claim to understand even half the theories in there, but it is a fascinating read and a mindbender similar to what Stephenson's "Snow Crash" had to offer twelve years ago.

  43. Caution! FAITH required! by Jerry · · Score: 2, Interesting

    Someone quoted from Hawkin's "A Brief History of Time" to ridicule the Pope. He could have quoted from the introduction, where Hawkins states that the Einstein Metric requires an "admixture" of philosophy, which he then goes on to describe. Basically, you have to accept some of the Metric's terms on Faith, because they can't be proven. Then there is Godell's Law.

    Over the years I've observed some things:
    1) Physicists at the top of the theoretical latter, like Hawkins, readily admit to the strenghts AND weakness of their models, but those at the bottom don't seem to understand the weakenss. They often speak in term os absolute knowledge, usually displaying lots of arrogance and insulting those who hold different views. No smear seems to be beneath them. The NTY science writer who ridiculed Goddard for believing man could fly to the Moon and said rockets couldn't fly in space because there was nothing to 'push against'. But, sometimes the 'expert' is not above arrogantly ridiculing the less trained. Prof. Langley denounced the Wright brothers efforts to build a flying machine as mis-guided, while crashing into the sea on both of his efforts.

    2) Science seems like a spiny sea urchin, with the spines representing specific areas of 'advancement' in knowledge. Some of those spines have only a handful of scientists at the tip, some only one, speaking in mathematical terms few others, if any, can understand. Are they right, or are they merely building castles out of clouds? Who can say?

    3) Biology has made advancements in direct proportion to its utilization of chemisty, then physics, then math. But even now, I have yet to read of any Evolutionist making a non-trivial prediction about some future event in the same way that Einstein precticed the bending of light grazing the eclipsed Sun and making a specific star appear to move a specific distance from its normal position relative to nearby stars. Claddists still hold to successive minute changes occuring over long stretches of time (gradualism) even though other Evolutionists don't believe the geologic record support gradualism, something Dawkin's called "Evolution's dirty little secret" in order to advance a theory he and Gould called "Puncuated Equilibrium". Punk Eek states that life forms are static for LONG periods of time then explode in a burst of new forms for a short (50K years) period of time because, they think, that is more in tune with what they think the geologic record is showing them. Both camps still argue about whose interpretation of the geologic record is right but always come together to fight those with divergent views. It seems that either view is preferable when compared to one which includes the actions of a Supreme Being, suggesting that the common element in both theories is that God is not.

    History is littered with the carcases of "missing Links" which turned out to be distortions of fact, mis-identified or even faked. It seems to me that if supporters of Evolution are so sure of its being factual one of its members could devise a sophisticated hypothesis that would predict specific facts of a non-trivial future event, something on the order of Einstein's Special Theory of Relativeity prediction.

    Well, I am going to suprise a few readers and state that such a prediction will soon be made (not by me!) and will prove overwhelmingly, by the best science we have today (DNA?), that Evolution is true and God is not. Those that witnessed for God will be destroyed, certainly in influence if not physically. Atheists and others who favored the demise of God will exchange gifts with one another in celebration of their achievement. These celebrations will go on for a few years. Very few people will continue to cling to Faith in God, and religious Faith might even cease to exist. Then the celebrations will cease. Then we shall know.

    --

    Running with Linux for over 20 years!

  44. quantum nonsense by samantha · · Score: 3, Insightful

    The observe effect at the micro level does not translate to the macro level being open to observer determination. The odd way the quantum level operates is used to justify all matter of nutty beliefs and ideas. Those who responded with some darwinian (at the quantum level yet) justification bordering on "consensus reality" should have their credentials as scientists lifted.

  45. Rupert Sheldrake... by deltavivis · · Score: 2, Informative

    Anyone else remember Rupert Sheldrake's "Seven Experiments that could change the world"? Sheldrake has a lot of odd probably crackpot theories, but one of his better ones was the idea of a morphogenetic field theory, http://en.wikipedia.org/wiki/Morphogenetic_field to explain both the shapes and behaviors of organisms, a sort of subatomic field effect that worked in conjunction with DNA. The best evidence he had involved the creation of new synthetic compounds that would be extremely unlikely to ever occur naturally. It turned out that the more often people created the compounds over time the molecules would appear to form more quickly. Most people had written this off as anomolous, or just a side effect of more experience in creating the compound. Sheldrake made the conclusion that the universe was building a "memory" of the atomic state of the new compound and was more prone to falling into such a state after it had been observed previously as it had "learned" the shape previously. Now this subatomic darwinism business is sure sounding a lot like these people are inferring a "memory" to the universe, so maybe the morphogenetic field theory isn't quite so odd as it sounds.