"Mirror Image" is a short story by Isaac Asimov, first published in 1972 in Analog Science Fiction/Science Fact . It features Asimov’s two most famous recurring characters: robot psychologist Dr. Susan Calvin and mathematician (later Galactic Empire politician) Dr. Elia Baley. The story is a classic example of Asimov’s “logical puzzle” approach to science fiction, focusing not on action or emotion but on the application of deductive reasoning to a seemingly intractable contradiction.
The "mirror image" in the title refers to several aspects of the case:
The ship’s captain is baffled. He calls on Dr. Susan Calvin and Dr. Elia Baley, who happen to be on board. Calvin, the quintessential logical positivist, and Baley, a detective from Earth’s overpopulated future, must resolve the paradox. They interview each mathematician separately. Both give identical stories: they were walking, the other approached, asked for help with a problem involving a hyperdrive equation, and they complied. The problem is symmetrical—a perfect “mirror image.” asimov mirror image pdf
First published in in the anthology The Early Asimov , Mirror Image is a short story featuring two of Asimov’s most beloved characters: Robot Psychologist Dr. Susan Calvin and robotics technician Powell .
Asimov’s prose deserves respect—and so does your digital safety. "Mirror Image" is a short story by Isaac
The narrative begins when R. Daneel Olivaw visits Elijah Baley on Earth with a unique dilemma involving two prominent Spacer mathematicians, Alfred Barr Humboldt and Gennao Sabbat. Both claim to have originated a revolutionary mathematical technique, accusing the other of plagiarism.
The story’s title refers to the mirror-like symmetry of the two men’s accounts. Asimov shows that logical symmetry in testimony is a red flag—real events have asymmetry. The detective’s job is to find the “broken symmetry” (here, the directional constraint of the corridor). Elia Baley
The story is set against the backdrop of a scientific dispute between two Spacer mathematicians, Alfred Barr Hummer and Gennao Sarton. Both claim to have come up with a revolutionary discovery, accusing the other of intellectual theft.