As an investigator, I have no fixed point of view, no commitment to any theory, my own or anyone else's. As a matter of fact, I'm completely ready to junk any statement I've ever made about any subject if events don't bear me out, or if I discover it isn't contributing to an understanding of the problem. The better part of my work on media is actually somewhat like a safe-cracker's. I don't know what's inside; maybe it's nothing. I just sit down and start to work. I grope, I listen, I test, I accept and discard; I try
out different sequences — until the tumblers fall and the doors spring open.