Didn’t read the whole thing because it’s super dense and I don’t like the “breaking people into four basic categories” thing - but the cartoons are good. Just makes me think of a Bill Burr(?) (edit: joke) line equating to something like “Think about how dumb the average American is and realize half of them are more stupid that that”. (Edit: always wondered if he assumed a normal distribution heh)

Suppose this is why we have “specializations” - most people don’t seek out medical advice from an electrician (or vice versa) but that doesn’t mean the respective individual lacks “knowledge”.