At the wonderful design/art/business blog Lost Garden, there's an interesting post about how learning in the context of games is fun. It alludes to the earlier work by Raph Koster.
The comments, however, have moved to a discussion on why school is largely considered Not Fun, if learning is supposedly the Ultimate Source Of Fun.
I still can't help but feel that something is wrong with the theory. If learning is fun, then classes(especially college with its more freeform attitude towards learning) should be fun in spite of the educational system. Teachers shouldn't have to work hard to engage their classes, they should have to go to great lengths not to engage them. But clearly that's not the case, which implies that only certain types of learning are fun.
Which types? Does learning have different "types" in the same way that there are different kinds of fun? Are certain types of learning more fun than others?