The human brain is generally wired to see others as more similar to ourselves than they actually are, hence Typical Mind Fallacy being a thing. Remembering tha

The human brain is generally wired to see others as more similar to ourselves than they actually are, hence Typical Mind Fallacy being a thing. Remembering that most of the rest of our cognitive processes are running on top of a hyperactive pattern matcher with a tendency to overfit (and to overestimate the comprehensiveness of the training data it's ingested to date) allows one to derive an appropriate lack of surprise at a lot of human behaviours from first principles. (or at least it seems to work out well for me, it is of course entirely possible that I'm overestimating how well it would work for any given other person for pretty much the reasons I just outlined above)