Mamet definitely has a wealth of interesting insights. This implies that the book holds significant value for students of film, as well as for those, such as myself, who are on the verge of pursuing an MA in directing. However, there is a drawback. I didn't appreciate the fact that his ego was blatantly evident throughout the entire book. He seldom accepts suggestions from students or other individuals. Moreover, he has a very clear and singular vision of what a movie should be, at least in terms of structure or objectives. This means that one will not encounter any counter-arguments or interesting alternatives within the pages of this book. Once again, it is useful and contains a great deal of wisdom and practical advice. Nevertheless, some of it should be regarded with a certain degree of caution.