Karpathy is reluctant to use brains as a model for AI because brains were produced by an evolutionary process that AI developers are not reproducing.

“um that's not reinforcement learning that's something that's baked in and evolution obviously has some way of encoding the weights of our neural nets in attcg's and i have no idea how that works but it apparently works so i kind of feel like brains just came from a very different process and i i'm very hesitant to take inspiration from it because we're not actually running that process so in my post i kind of said”