A novel it's different. It's kind of exhilarating not to have to cut to the bone constantly. Oh, well I can go over here for a moment. I can say what I think the guy was thinking or what the day looked like or what the bird was doing. If you do that as a playwright, you're dead.
The essence of humor is that it should be unexpected, that it should embody an element of surprise, that it should startle us out of that reasonable gravity which, after all, must be our habitual frame of mind.