An enjoyable script based on the short story of the same name.
But if you come across something you know to be true, one thing is certain: you can never go back to not knowing.

Variants

(1)
  1. The Chronology Protection Case by Mark Shanahan et al. (Fall 2002).
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Mark Shanahan