Keeping Their Attention

From David Mamet's new book Theatre, but applies equally to just about anything that involves an audience.

The job of the dramatist is to get, and that of the actors and directors to keep, the asses in the seats. Period. That is what pays the rent. Whatever an individual may have to say, it will not be heard unless the audience is (a) there and (b) paying attention. And no one pays attention to anything that bores them. Why should they? You won't, I won't.

We would all do well to take heed.