The Direction of Time

Physicists tell us that there is no reason in principle why time should not run backwards.  Yet they also tell us that the overall entropy of the system is destined to increase until we live in a universe of maximum disorder.  The movement towards disorder is a way that we mark the progress, forward, of time.

Like Pigpen in the "Peanuts" comic strip, I leave behind me a dense trail of dirt and dust.  In principle, my entire life history could be reconstituted from the dirt and the dust.

In principle.