I think all those actors from that generation, like Bogart - they were wonderful actors. They didn't act. They just came on and they did it, and the characters were wonderful.
We are dying from overthinking. We are slowly killing ourselves by thinking about everything. Think. Think. Think. You can never trust the human mind anyway. It's a death trap.
I'm most suspicious of scripts that have a lot of stage direction at the top of the page... sunrise over the desert and masses of... a whole essay before you get to the dialogue.