qmotus comments on The Philosophical Implications of Quantum Information Theory - Less Wrong

5 Post author: lisper 26 February 2016 02:00AM

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Comment author: lisper 07 March 2016 12:13:04AM *  0 points [-]

according to MWI there surely will

No. Not "will". IS. If you're going to take the God's eye view then you have to let go of your intuitions about time along with your intuitions about classical reality. The wave function is a static four-dimensional thing. Time emerges from the wave function in exactly the same way that classical reality does. You have to be careful not to apply terminology from the mortal's-eye-view to the God's-eye-view. That's how you get yourself into trouble.

UPDATE: Here is a popular article about how time emerges from entanglement.

Comment author: qmotus 07 March 2016 07:56:36AM 1 point [-]

I think what I said applies when you take a first-person point of view. If you're a participant in a quantum suicide experiment, then if you expect a collapse interpretation to be an accurate description of reality, you should expect to eventually be hit by a bullet and die. But both MWI and QIT predict that you will continuously notice that the gun doesn't fire. The difference is not in the point of view taken, it's in the fact that the parts of the wavefunction that contain a (from first-person eye-view) future version of the participant actually are there.

Comment author: lisper 07 March 2016 10:55:45PM 0 points [-]

But both MWI and QIT predict that you will continuously notice that the gun doesn't fire.

No, that's not quite true. QIT predicts that if you notice anything then you will notice that the gun didn't fire. But QIT does not guarantee that you will notice anything. You could just die.

Notice (!) that when you start to talk about "noticing" things you are tacitly bringing consciousness into the discussion, which is a whole 'nuther can o' philosophical worms.

See also my response to akvadrako.