Wikipedia
Un-Man
Un-Man is a science fiction novella by Poul Anderson that was first published in the January 1953 issue of Astounding Science Fiction. It was included in the 1962 collection Un-Man and Other Novellas, and the 1981 collection The Psychotechnic League. As a component of the Psychotechnic League future history, "Un-Man" takes place in the year 2004, between "Marius" and "The Sensitive Man".
"Un-Man" was nominated for a retro-Hugo for best novella of 1953 at the 2004 World Science Fiction Convention.