It's not easy to improvise. It's the most difficult thing to do. Even when one improvises in front of a camera or a microphone, one ventriloquizes or leaves another to speak in one's place, the schemes and languages that are already there. There are already a great number of prescriptions that are prescribed in our memory and in our culture. All the names are already programmed. It's already the names that inhibit our ability to ever really improvise. One can't say whatever one wants. One is obliged, more or less, to reproduce the stereotypical discourse. And, so I believe in improvisation. And, I fight for improvisation. But, always with the belief that it's impossible. And, there where there is improvisation I am not able to see myself. I am blind to myself... and, it's what I will see --no, I wont' see it-- it's for others to see. The one who is improvised here –no, I won't ever see him.
Derrida (Unpublished Interview, 1982)
Mechanical skill and mathematical exactness eliminate the danger of the horse's uncertain temper, sudden fright and unruly disposition –no "Runaways" with "The Best Thing on Wheels."