Because the form is nothing other than an expression of the way in which the audience perceives. Hitchcock, Mamet is a theoretician of audience response. So it makes sense that he not only writes for film but directs films as well. The Spanish Prisoner is his latest effort in this line, and it harkens back to House of Games, his first. It's a classic Mamet fixation.
Genre is another, particularly when it comes to the screen.
Only 1994's Ole-anna Mamet's controversial rumination on sexual harassment in which a man was the victim steered clear of an identifiable genre type. According to Mamet, it's very, very consciously an attempt to understand the Hitchcockian mode. But there are all different kinds of thrillers. But I always loved them, the light thrillers, Stanley Donen and Hitchcock. Fast company, even for a five-time director of notable talent.