Comment by AntonioCao

Make sense. A fun argument for why brain's underlying "algorithm" should be simple is that evolution didn't take that long to go from creatures with primitive cognitive functions to thinking-talking humans. The sensible solution, just like the way evolution solved many other problems, is to replicate what's working in a massive scale, similar to how we build artificial neural networks. This argument was popularized by jeff hawkins in his thousand brains theory, I believe.