[joycian]

I think he means it would be expensive to inject randomness all the time instead of just letting a rule-based system go from state to state deterministically.

[mirimir]

OK, except why are you putting it in those terms?

It just is what it is. There's no reason to think that stuff evolves in the least-expensive way.

And there are rules. What we call laws of physics. It's just that there's lots of wiggle room. At least, if you're lucky enough.