“The single most useful thing I’ve learned from science fiction is that every present moment, always, is someone else’s past and someone else’s future. I got that as a child in the 1950s, reading science fiction written in the 1940s; reading it before I actually knew much of anything about the history of the 1940s or, really, about history at all. I literally had to infer the fact of the second world war, reverse-engineering my first personal iteration of 20th-century history out of 1940s science fiction.
