I guess technically everything physical is an FSM with enough states, but that wouldn't be a particularly strong statement. That being said, I'd argue a lot of

I guess technically everything physical is an FSM with enough states, but that wouldn't be a particularly strong statement. That being said, I'd argue a lot of such posts are of that form (one big idea that's well-known in TCS) modulo some amount of additional cool/novel/well-exposed/interesting stuff I didn't know before (the latter of which is what I really read the post for).