Producer/ writer R.W. Goodwin was inspired to write the episode after reading "An Anthropologist on Mars," a series of essays by Oliver Sacks, in particular "The Landscape of Dreams," featuring a man who could recall every detail of his childhood.
This is the second time that a member of the production team has written an episode. In Season 3, special effects supervisor Mat Beck penned Wetwired (1996); here it's the turn of executive producer and director R.W. Goodwin.
R.W. Goodwin spent 6 weeks writing the script, his first since 1990 when he wrote an episode of Mancuso, FBI (1989).