A fallen angel, who himself cannot undo time, pushes mankind to the brink of extinction.
Cowardice again—that man did not want to argue about the boundaries with his neighbor’s muscular cousin. Another lucky accident, and there you are. Geometry.

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  1. “The Last Word” by Damon Knight, in Satellite Science Fiction, February 1957.
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Damon Knight