Many people have noted that smoking hookah is different from smoking cigarettes in that you don't burn the shisha - you simply "cook" it or "bake" it with the coals. That brings up two questions for me:
1) Where does all the smoke come from, if nothing is on fire?
2) Has anyone ever invented a coal-free way of smoking? Say, by using a bowl which could be heated, like an oven, to a certain constant temperature, and which would then evenly cook the shisha rather than burning it.
These might be stupid questions, but they've been bugging me.