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Reality doesn’t exist until it is measured, quantum experiment finds

anu.edu.au

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Re: Reality doesn’t exist until it is measured, quantum experiment finds

#111

And perhaps someday we'll get to meet the great programmer in the sky the developed the simulation we are living in and we will ask him why he designed it that way and he will say something like "oh I just wanted to optimize the code so I simply excluded reality subroutines when there were no beings looking. I just never thought you guys would notice. As soon as I saw that you guys noticed the flaw, I was going to lo…

Reality frustrum culling?

^ This

Re: Reality doesn’t exist until it is measured, quantum experiment finds

#112
For me the only way I can make wave-particle duality and associated observations believable is to think that light and similar entities always travel as a wave, but sometimes interact like particles.

This understanding is in line with this experiment without believing that future affects the past. It's just that atom is never a particle until it reaches detector at the end. Only there it displays ability to exchange momentum with one other single atom as if two billiard balls hit. Throughout the whole experiment it travels as a wave, both paths, grating or no grating. It just either interferes if there was second grating or not if there was no second grating.

Re: Reality doesn’t exist until it is measured, quantum experiment finds

#113
post #25

Clever optimization by our simulators, Big up

I've always wanted to read (or write?) a book about us determining we are in a simulation, but we find subtle flaws like this we're able to exploit in weird ways. Kind of like breaking out of a VM through register flaws or something. Anyone know of a story along those lines?

http://lesswrong.com/lw/qk/that_alien_message/

Re: Reality doesn’t exist until it is measured, quantum experiment finds

#114

The jokes above that say that this was done by our simulators to save on computation are amusing but wrong. Quantum computation is famously harder than classical computation.

unless you have a quantum computer then it's still hard but you can evaluate all states concurrently and trick them to collapse into the result

Re: Reality doesn’t exist until it is measured, quantum experiment finds

#115

The jokes above that say that this was done by our simulators to save on computation are amusing but wrong. Quantum computation is famously harder than classical computation.

That's assuming that the simulation is running on classical computers. The simulation could be running on quantum computers or who-knows-what. Quantum computers might not be so inconvenient to build to make in the host world's physics.

Re: Reality doesn’t exist until it is measured, quantum experiment finds

#116
post #32
post #3

What does it mean to exist? A thing exists specifically when it affects something else. What is measurement? It's a reciprocal affecting. So does a thing which is not affecting anything else and not being measured exist? No! QED

Right. This way of describing it is much closer to "zero-worlds" or relational quantum mechanics, and to my mind is a far simpler, deeper way of understanding what's really going on - reality is simply all entanglement. What really still gets me is the way it's not simply that the atom wasn't interacted with, but that if the information about the interaction never leaks to the outside world - if it's "erased" after t…

Do you have a source for this "information leaking" concept. I remember hearing about an experiment confirming such an idea, but I can't recall what it was.

Re: Reality doesn’t exist until it is measured, quantum experiment finds

#117

And perhaps someday we'll get to meet the great programmer in the sky the developed the simulation we are living in and we will ask him why he designed it that way and he will say something like "oh I just wanted to optimize the code so I simply excluded reality subroutines when there were no beings looking. I just never thought you guys would notice. As soon as I saw that you guys noticed the flaw, I was going to lo…

In other words, reality is lazily evaluated and is written in Haskell ?

Hmm, I figure it's more the the optimizer depends on code not exhibiting undefined behavior, like in C. It's not really the case that it's lazily evaluated, just the the causality gets screwy when you try to observe things in an asynchronous system without any kind of coherent memory model.

Re: Reality doesn’t exist until it is measured, quantum experiment finds

#118

In the time of Empiricism, the philosophers George Berkeley and John Locke proposed something similar. I believe it was called it immaterialism, or the idea that nothing exists without being perceived. Berkeley went further saying that objects only exist in the mind, or something like that.

There's a fun Limerick by one Robert Knox inspired by one of Berkeley's arguments about what happens to objects when they are not being perceived:

There was a young man who said, "God

Must think it exceedingly odd

If he finds that this tree

Continues to be

When there's no one about in the Quad."

REPLY

Dear Sir:

Your astonishment's odd:

I am always about in the Quad.

And that's why the tree

Will continue to be,

Since observed by

Yours faithfully,

GOD.

Edit: Formatting (newlines)

Re: Reality doesn’t exist until it is measured, quantum experiment finds

#119
post #25

Clever optimization by our simulators, Big up

I've always wanted to read (or write?) a book about us determining we are in a simulation, but we find subtle flaws like this we're able to exploit in weird ways. Kind of like breaking out of a VM through register flaws or something. Anyone know of a story along those lines?

Off to Be the Wizard by Scott Meyer. Did not like it, though.
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