Dave Arneson was an instructor at Full Sail University back when I was a student. He taught the "Rules of the Game" class, which was mostly just us listening to his lecture and playing boardgames. He wanted us to learn the basic concept of any game is gameplay; to forget about graphics and special effects. How to invent rules that makes a game fun to play.
Dispite the bad blood with Gygax, Dave was still proud of D&D and most of his lectures were built around it. He was an interesting man.
He also taught us that , sometimes, a Dungeon Master has to drop a meteor on a shitty min/max character to teach the player a lesson.