(I could be wrong about that second part, but I would need a counter-example of it in practice that I can't currently conceive of.
I am of course open to the notion that we often learn just as much during our leisure as in structured learning environments. I'm not saying we don't learn from passive & imaginative leisure activities, I'm just saying those activities are not useful in classroom environments, assuming we admit the need for classroom environments in the first place -- not all do!)