The first and most vital step of all, as I said at the outset, is simply to understand media and their revolutionary effects on all psychic and social values and institutions. Understanding is half the battle. The central purpose of all my work is to convey this message, that by understanding media as they extend man, we gain a measure of control over them. And this is a vital task, because the immediate interface between audile-tactile and visual perception is taking place everywhere around us.