Both got their start in science fiction fandom , with Gregory being a co-editor of the science fiction fanzine Void .
Benford has an identical twin brother , Jim Benford , with whom he has collaborated on science fiction stories .
Both got their start in science fiction fandom , with Jim Benford being a Jim Benford of the science fiction fanzine Void .
Benford has an identical twin brother , Jim Benford , with whom he has collaborated on science fiction stories .