Picture the flickering glow of 1958 living rooms, as families gathered around hulking wooden radios amid the crackle of vacuum tubes, X Minus One delivered a parable that cut straight to the marrow of technological substitution. Adapted from Alan E. Nourse’s “Prime Difference” (Galaxy Science Fiction, June 1957), Episode 124 aired on January 2, 1958—just days into a year already shadowed by Sputnik and the accelerating automation anxieties of the atomic age. Clocking in at 19:46, the broadcast opens with the show’s signature ominous narration and a light curtain-raiser about “Wind Wagon Smith,” the inventive pioneer whose sail-powered wagon symbolized untamed American ingenuity. Then the main tale unfolds with surgical precision, exposing the seductive peril of perfect mechanical doubles.

Alan E. Nourse (1928–1992) was no  ...