[jnakayama]

Completely agree! I had the same thought when looking into elementary cellular automata, they seem so inoccuous, but there are still so many open questions. There is even a prize for solving three particular ones: https://www.rule30prize.org/

[Gehinnn]

I'm quite happy that I have absolutely no idea what kind of argument could possibly be employed to solve any of those problems. No danger of wasting an endless amount of time here.