How Does Behaviour Evolve?

i love octopus. Octopus were actually the first animals that i did a project on when i was an undergraduate um in california. And people, they've almost like reverse engineered it where they're surprised by the fact thatoctopus don't live very long. It just doesn't make any s to me. Like, wy, why do you want to back everybody into a corner like that? How does behaviour evolve? I think that's really the question people are interested in,. or at least i'd like for them to be interested in rather than, oh, who's smarter than who? Cause i think they a who's smarter Than Who?