The first two sections (analyzing Aristotle's Poetics and Brecht's aesthetics), while long, dense and confusing, make clear Boal's argument for the necessity of a change in theater practice if it's going to be a vehicle of change. It also cleared up my ancient philosophy course from college. I'm glad he's written other books, because the actual information about theatre of the oppressed tends to be thin and abstract, and since it's so different from anything I've ever done or seen, more examples would have been helpful. Still, he never wastes words, and it is such a rich subject that I know I'll understand more when I reread it. Highly recommended.