[kbenson]

> You do not get a useful developer in the end otherwise

Not all developers do stuff with UI, and of those that do not all do anything with a UI that is actually graphical beyond a terminal.

> since you need to understand basics of human perception to understand compression in that area (jpg, mp3), they talked about stuff like that.

That is a good reason to teach it, and counters my overly assertive original comment.