[TeMPOraL]

> It's not that these are specific things you should memorize, but that it's at least a necessary condition: if you can't, without notes, say what an expectation is, what a loss function is, what nonparametric regression is, etc., and when you might use some of these things, then you probably didn't pay attention in class or work any of the problem sets, because after a semester of actually doing the course you should definitely know all that without even really thinking.

Terminology is easy to remember once you understand the concept, and those things you mentioned are something that you do not memorize. Those things you have to understand. You can memorize a formula, and you can memorize a list of applications of a given concept, but both of them are worthless if you don't understand on a gut level, what the concept is and thus where to apply it.