I've long suspected that the brain might be using quantum computing techniques. It's a good physically plausible explanation for how you can get more compute than a modern at-scale data center on 40-60W of power and in a volume about the size of two beer cans.
IMHO there's really only three possibilities:
(1) There exist ridiculously efficient learning, search, and other algorithms that have not been formally discovered that allow the brain to do what it does on a lot less compute than we think. P=NP would be the extreme case of this.
(2) The brain is a quantum computer or is doing something equally exotic.
(3) It's supernatural, and the brain is only like a radio receiver for something in another realm. (Or the universe is a simulation, etc., etc.)
IMHO there's really only three possibilities:
(1) There exist ridiculously efficient learning, search, and other algorithms that have not been formally discovered that allow the brain to do what it does on a lot less compute than we think. P=NP would be the extreme case of this.
(2) The brain is a quantum computer or is doing something equally exotic.
(3) It's supernatural, and the brain is only like a radio receiver for something in another realm. (Or the universe is a simulation, etc., etc.)