Variants

(1)
  1. “You See But You Do Not Observe” by Robert J. Sawyer, in Sherlock Holmes in Orbit, edited by Martin H. Greenberg and Mike Resnick (MJF Books, 1995).
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Robert J. Sawyer