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Scientist Suggests We Explore 'Universe is a VR Simulation' Theory

holy_calamity writes "A New Zealand physicist has written a paper saying that physicists should seriously explore the possibility the universe is a giant virtual reality simulation. He says that the existence of quantum phenomena could be due to the underlying digital nature of the simulation and also claims his VR hypothesis can explain relativity, the big bang and more. It should be possible to perform experiments to prove the hypothesis too. He reasons that if reality was to do something that information processing cannot, then it cannot be virtual."

9 of 1,144 comments (clear)

  1. Re:1637 called, they want their idea back. by explosivejared · · Score: 4, Interesting

    So how would we be able to tell if our universe was a simulation? Whitworth says that if reality was to do something that information processing cannot, then it cannot be virtual. But he falls short of suggesting what this might be.

    This is the failure of reconciling the metaphysical with the physical. I agree with you completely. There is no way for us to remove ourselves from the universe at large to observe it. Whitworth is not a scientist when he speaks of this. He is a philosopher exploring metaphysics and ontology.

    I can come up with a number of theories about reality myself, and without being able to experiment on them they are just as valid. Therefore I propose that the universe we experience is really just the eye of an aether system. Once you get beyond the aether, it really is turtles all the way down. That's just as valid, without relevant experimentation, as the universe being a vr sim. Metaphysics is cool and all, but just don't call it science or its practitioners scientists.

    --
    I got a catholic block.
  2. Yes, and this guy won! by DRAGONWEEZEL · · Score: 4, Interesting

    The thing about all this is (preps Karma Shield) Who cares?

    Ahhh good shield...
    Uh oh detecting anomolies... Captain we need to reroute power from the phasers & the warp drives to the shield deflectors.
    Make it so.
    Ahhh it worked. Good job!

    K now that my Karma is safe... Please understand what I mean.

    Philosophical, unprovable arguements are by nature not worth more than discussion, and can not by nature lead to any outcome other than heated debate, War, or in this guys situation, a bad case of the munchies. I totally agree that this is like a conversation over a bowl of weed after watching the Matrix.

    Personally, I believe in God because of certain situations in my life where I should have died or been seriously injured but was preppared by a "voice." But if god is just a program to inject thoughts in my head that save my life, then my belief in God is still valid, because from my perspective that program IS GOD.

    Secondly if this is a VR sim, than there must be some Reality sufficiently advanced to where we could get replicated in RL from our VR selves after we proved our worth here! (another reason to be good!)

    --
    How much is your data worth? Back it up now.
  3. I disagree by jd · · Score: 3, Interesting
    I believe it is testable. All computers ultimately reduce to the Turing Machine. This includes neural networks and at least some classes of quantum computer. (Heresy, I know. Terrible. Now go find a medium-rare steak to burn me on.) However, not all problems reduce to computable problems. If there is a non-computable system that exists in the real world, then it cannot be the product of a simulation, no matter how advanced the computer is.

    Do such problems exist? Well, chaos theory is full of them. You cannot have a system that is truly chaotic and computable at the same time - the two are mutually exclusive. Both are deterministic, but only one is predictable.

    --
    It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
    1. Re:I disagree by UbuntuDupe · · Score: 3, Interesting

      I agree, chaotic does not imply non-deterministic, just "really hard to compute for prediction".

      As for your question, yes, there is a classic example of a deterministic-but-not-computable system. However, it is not chaotic. I will describe it anyway, just to be cool. The system is as follows:

      Let A(n,s) be a random algorithm that operates on the input, integers n and s. Let t be number for the current state. (If you are on the 1000th iteration in time of the system, t is 1000.)

      The system has one binary variable, s.

      The state at any given time t is defined by:

      If A(t-1,s(t-1)) halts, s=1 at time t; s=0 otherwise.

      As you can see from the description, each state t is fully determined by the previous state, s(t-1). Therefore, it is deterministic. However, there exists no algorithm that can tell you if an arbitrary algorithm, for an arbitrary input, halts. (That is the famous Halting Theorem.) Therefore, you cannot compute it.

      Okay, I might have gotten the system a bit wrong...

  4. Trippy, duuude by longacre · · Score: 5, Interesting

    "Today a young man on acid realized that all matter is merely energy condensed to a slow vibration, that we are all one consciousness experiencing itself subjectively, there is no such thing as death, life is only a dream, and we are the imagination of ourselves. Here's Tom with the weather." --Bill Hicks

  5. Re:1637 called, they want their idea back. by Spazmania · · Score: 4, Interesting

    This is the failure of reconciling the metaphysical with the physical.

    No, no! He's on to something. Consider this example:

    When routing TCP/IP packets, the best available software algorithms are tree-based. You step down the branches of the tree until you find the most specific route known for the destination address. Its O(log n).

    However, if you step out of the software universe running on a general-purpose computer, you can design a hardware device called a "TCAM." A TCAM is a special kind of static ram where a request is processed across all cells in the same cycle in order to produce the best match. Not only does it return a routing decision in O(1), it returns that decision in exactly one clock cycle.

    Now, we could describe how a TCAM works within software and we could even simulate it but the simulation would run in O(n) because the simulation would have to activate each cell in sequence instead of activating all cells at once the way a real TCAM does.

    So the challenge for detecting whether we're in a virtual reality is this: find a mathematical problem which is conceptually simple (e.g. factoring the product of large primes) but which we know to be hard ( O(x^n) ) and then construct a simulation of a finite ur-universe in which the problem is easy. The simulation itself won't run any faster than the best known factoring algorithms but it would be able to prove that given the physical rules of the ur-universe the factoring would have completed in O(1).

    Successfully constructing such a simulation wouldn't prove that we're actually in a virtual reality, but proving that such a simulation can't be constructed would prove that we're not. Thus the theory is falsifiable. Thus it is science, not philosophy.

    --
    Moderating "-1, Disagree" is simple censorship. Have the guts to post your opinion.
  6. Re: it's programmed to be this way by porcupine8 · · Score: 3, Interesting
    Maybe not everyone needs a "chain of logical arguments" to convince them that God exists? Or of other things - I don't have any logical arguments to convince me that my husband loves me. Logically, it's just as likely that having and raising children is very very important to him, and he believes that I will be an excellent mother, and so he wants to take good care of me and make me happy so that I will help him raise children. That could, potentially, be indistinguishable from him actually loving me, but still I believe that he does love me. Amazingly enough, being a scientist does not automatically meant that I must be 100% logical in all things - I am a human scientist, after all, not Vulcan.

    You also do not have to believe "you may not question that" to believe "He just exists." You can easily believe that you can question it all you want - but a) questioning it doesn't make it less true and b) the fact that you can't get good answers to your questions right now doesn't make it less true. Maybe someday we'll know the answers to those questions, maybe not. Maybe our piddly little brains just aren't capable of comprehending whatever it is that created God, so we can physically never know.

    --
    Warning: Apple/Nintendo fangirl. Likes her electronics cute & cuddly. May be rabid.
  7. Re: it's programmed to be this way by tbg58 · · Score: 4, Interesting

    There are reasonable people on both sides of the question of god's existence. In this case, the issue is one of causality. Specifically, the "it's watchmakers all the way up" fails because it posits an infinite series of causes.

    We exist right now at a point in the series of causation. But an infinite series cannot be traversed, so the infinite series of watchmakers cannot lead us to any present we are part of.

    This doesn't connote necessarily the existence of god. It does mandate at some point a cause which is uncaused, non-contingent and necessarily existing as the foundation of existence, but there is no purely logical reason that says a higher order universe cannot have these attributes.

    The idea that what we experience as the universe is a VR simulation really doesn't advance the question about ultimate being at all, it just moves it down (or up) one layer.

    Ultimately, though, since all we know and experience is both caused and contingent (including the universe itself) there must be something uncaused and non-contingent behind it. Non-being cannot give rise to being, so self-creation is out as well. Again, this doesn't on purely logical grounds have to be god, and even if one suggests that god is the ground of being this sort of argumentation doesn't come anywhere near proving the existence of any particular god.

    In my own case I am a theist, but I have reasonable friends who disbelieve on reasonable grounds (I also have both theistic and atheistic friends who are unreasonable - I hope I'm not falling into that camp by this post). Hope this helps a bit at least to clarify the implications of the concept of causality.
  8. Flamebait mod unfair by jcaldwel · · Score: 3, Interesting

    The flamebait mod of the parent was unfair. Yahweh would be a scary, immoral bastard if he were real. Thank non-god he isn't. Silly theists, myths are for kids!

    If a book is of divine revelation, does that not mean that it has to be true in its entirety? Christians do not follow many of the practices talked about in the Old Testament, and, in fact, would be abhor many of them if they were to take place in modern times.

    The fact that Christians pick and choose which verses to incorporate into their moral code, and which to ignore shows that their sense of morality comes from somewhere other than the Bible itself.

    I invite anybody to check my references.

    Numbers

    According to the Book of Numbers, Moses commanded his people to kill all Midianites, except for the female virgin children, which the soldiers were to "keep alive for [themselves]":

    Numbers 31:15-18 (King James Version) (http://www.biblegateway.com/passage/?search=Numbers%2031:15-18;&version=9;)

    15. And Moses said unto them, Have ye saved all the women alive?

    16. Behold, these caused the children of Israel, through the counsel of Balaam, to commit trespass against the LORD in the matter of Peor, and there was a plague among the congregation of the LORD.

    17. Now therefore kill every male among the little ones, and kill every woman that hath known man by lying with him.

    18. But all the women children, that have not known a man by lying with him, keep alive for yourselves.

    This passage implies pedophilia, rape, and genocide. Certainly this is not anything that we would condone today.

    Judges

    According to the Book of Judges, the same fate was sentenced to the inhabitants of Jabeshgilead:

    Judges 21:10-24 (King James Version) (http://www.biblegateway.com/passage/?search=Judges%2021:10-24;&version=9;)

    10. And the congregation sent thither twelve thousand men of the valiantest, and commanded them, saying, Go and smite the inhabitants of Jabeshgilead with the edge of the sword, with the women and the children.

    11. And this is the thing that ye shall do, Ye shall utterly destroy every male, and every woman that hath lain by man.

    12. And they found among the inhabitants of Jabeshgilead four hundred young virgins, that had known no man by lying with any male: and they brought them unto the camp to Shiloh, which is in the land of Canaan.

    13. And the whole congregation sent some to speak to the children of Benjamin that were in the rock Rimmon, and to call peaceably unto them.

    14. And Benjamin came again at that time; and they gave them wives which they had saved alive of the women of Jabeshgilead: and yet so they sufficed them not.

    15. And the people repented them for Benjamin, because that the LORD had made a breach in the tribes of Israel.

    16. Then the elders of the congregation said, How shall we do for wives for them that remain, seeing the women are destroyed out of Benjamin?

    17. And they said, There must be an inheritance for them that be escaped of Benjamin, that a tribe be not destroyed out of Israel.

    18. Howbeit we may not give them wives of our daughters: for the children of Israel have sworn, saying, Cursed be he that giveth a wife to Benjamin.

    19. Then they said, Behold, there is a feast of the LORD in Shiloh yearly in a place which is on the north side of Bethel, on