Ex-felon Peter Bitner jumps at the chance for a steady job with Dr. Jonas Gorski, only to end up debating time-travel paradoxes and ethics with the disgraced scientist who keeps building bigger and bigger time machines.
Stop Hitler and what else do you alter? Millions of lives saved, sure, but billions of lives changed.

Variants

(1)
  1. “Time Out” by Edward M. Lerner, in Analog, January/February 2013.
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Edward M. Lerner