Physics professor Owen fitzHugh tells a story in a pub about how a small quantum fluctuation in the past can cause big consequences down the line—and how he may have sent a chronon into the past to do just that.
I’m not sure. A device to excite time quanta, I think. Into the past, of course.

Variants

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  1. “Built upon the Sands of Time” by Michael F. Flynn, in Analog, July/August 2000.
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Michael F. Flynn