Spoiler: it isn't. Anyone wants to me up on a bet against quantum supremacy in the next decade? And ever?https://twitter.com/coherence/status/957452301181992960 …
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Replying to @RitaJKing
If my hunch is correct, the Church Turing thesis turns out to be a physical law, and QM, while correct, is not an ontological theory.
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Replying to @Plinz @RitaJKing
Excuse the noob question, but what difference do you make between correct and ontological? And how do those compare to “having predictive power” or, to use your terms, “being a suitable encoding”?
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Replying to @sableRaph @RitaJKing
Thermodynamics correctly describes the exchange of heat, yet heat does not really exist (i.e. is not ontological. Atoms and molecules are not hot, they just have a lot of speed differences, and heat is what you get when you zoom out and you cannot observe atoms directly.
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Replying to @Plinz @RitaJKing
Thanks for your answer! Correct me if I’m misunderstanding, but do you mean to say that emergent properties don’t “exist” because they are caused? Wouldn’t that require the existence of some uncaused cause? I must be missing something.
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Replying to @sableRaph @RitaJKing
Yes, I would say that emergent properties are only apparent, with respect to a particular mode of observation, but there must also be some ground truth. We can conjecture that there is some Prime Mover, a first cause, but cannot make inferences beyond that. It's an embarrassment!
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Replying to @Plinz @RitaJKing
“There must also be some ground truth” <- Interesting that you’d say that. What convinced you that this is the case? Isn’t it equally conceivable that it is “turtles all the way down”? :)
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I really don't know which is more easily conceivable. But once an observer reaches a causally closed layer of description, everything below that is insulated from its inquiry.
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