[sambapa]

The brain isn't a fsm simply because I can create a game with an aribtrary number of rules. If I can do that, then there are countably infinite fsm just for making games in my brain, "making a game with one rule fsm", "making a game with two rules fsm" etc.

[naasking]

> The brain isn't a fsm simply because I can create a game with an aribtrary number of rules.

And so can a finite state machine with the same state space as your brain. Size of state space is not a difference of kind but of degree.