> imagine an incredibly-detailed computer simulation of a brain, down to the level of individual cells and neurotransmitters. (While this is beyond our current

> imagine an incredibly-detailed computer simulation of a brain, down to the level of individual cells and neurotransmitters. (While this is beyond our current capabilities, it is in principle possible.) The laws of physics start to become relevant here. It is quite likely that it is not possible to simulate a human brain using a classical computer, at least not at any kind of speed such that it can experience the world as we do.