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by tensor 1465 days ago
Quantum is the go to pearl for everyone who doesn't like the idea that consciousness is not simply a result of a deterministic but very complex system of physics. Unfortunately there has never been any evidence that anything in the brain exhibits any sort of quantum computing or logic or otherwise.

Thus, the burned of proof is in fact on the the claim that you cannot get their through computation, because deterministic physics processes are all that we have observed in the brain, thus the default assumption must be that all the properties of the brain are also deterministic.

3 comments

As a side comment however, Roger Penrose has this argument about some kind of quantum effects from microtubules in cells https://en.wikipedia.org/wiki/Roger_Penrose#Consciousness (but to go as far as to say that this might be the reason in the end why consciousness is not a computation is still a whole debate however, and his theory is far from making a consensus I am afraid)
I don't understand how this would be an escape hatch though. If some sort of quantum randomness is essential for the emergence of consciousness, it could be incorporated into an algorithm as well. It wouldn't be strictly deterministic, but why would that matter?

Maybe I'm missing something.

Well, there are plenty of quantum effects required for cells to function (everything is just biophysics and biochemistry after all), but those are irrelevant at the scale of the brain as a whole. The properties we care about (especially in this context) are emergent.