Mistake (#93)

1976-00stand-alone Short StoryStellar #2, original anthology edited by Judy-Lynn del Rey

anthology, 100 Great Science Fiction Stories, edited by Isaac Asimov, Martin H. Greenberg, and Joseph D. Olander;
Science Fiction and Fantasy Story-A-Month 1989 Calendar, ed. Isaac Asimov & Martin H. Greenberg, Pomegranate 1988;
Convergent Series
Elroy Barnes In space, no one can hear you take a pill

A playful short story in the same vein as "The Nonesuch," based on the idea of reverse solipsism (for lack of a better term): "I exist because someone else imagines I do."