How do we experience time? In a series of amazing experiments, Robert E. Ornstein shows that it is difficult to maintain an “inner clock” explanation of the time experience, and he suggests a surprising new approach. This approach alone makes sense of all the data now available - data on the lengthening of duration under LSD, for example. As K. H. Pribram writes in his Forward, "Ornstein's experiments are ingenious and his approach is fun to read about and to contemplate. Fun should be shared - so here is Ornstein on the 'experience of time.'"