Whenever a new piece of technology comes out (these days, mostly AI) I go to some effort to understand it. Usually I end up writing a post about it, so I can be confident that I do understand1. What’s the point of doing this? Obviously my explainers about diffusion models are shallow: certainly they aren’t detailed enough to do useful research on diffusion models. What’s the point, then? In my view, good engineering requires having reliable shallow intuitions about how things work. You don’t nee...