Lesson 11 Rule: Time is the medium of the struggle to see the world.   Barry vaguely remembered the movie "Grand Canyon," from the "Big Chill" guy. The toothless mouth had been used to show the 80's divide between rich and poor, black and white, Steve Martin and Kevin Klien. But seeing it now, he was disappointed. It was like seeing Cleopatra in person. Vanity was staring into a cave painting.