A neuroscience researcher responds to Jonathan Parks-Ramage's "The Preschool." There's a famous saying, often credited to Isaac Asimov, that "today's science fiction is tomorrow's science fact." Whoever said it, they weren't wrong. The Dick Tracy two-way wrist radio is now commonplace, the Jetsons' videophone is ubiquitous (and more compact), and stun guns are often carried by police officers--although they never say "Set your phasers on stun." Today's science fiction is chock-full of ideas that are not yet fully realized, such as interstellar exploration, time travel, alien communication, teleportation, and cybernetics.