DAVAN—…In the unsettled times marking the final centuries of the First Galactic Empire, the typical sources of unrest arose from the fact that political and military leaders jockeyed for “supreme” power (a supremacy that grew more worthless with each decade). Only rarely was there anything that could be called a popular movement prior to the advent of psychohistory. In this connection, one intriguing example involves Davan, of whom little is actually known, but who may have met with Hari Seldon at one time when…