Three Laws of Robotics card-readers in "The Caves of Steel" have a capacity of only a few kilobytes per square centimeter of storage medium. "Aurora", in particular, presents a sequence of historical developments which explains the lack of nanotechnology — a partial retcon, in a sense, of Asimov's timeline. There are three Fourth Laws written by authors other than Asimov. The 1974 Lyuben Dilov novel, "Icarus's Way" (a.k.a., "The Trip of Icarus") introduced a Fourth Law of robotics: Dilov gives reasons for the fourth safeguard in this way: "The last Law has put an end to the expensive aberrations of designers to give psychorobots
Sci-Fi (G.I. Joe) of the G.I. Joe sub-team, the Star Brigade, which includes Space Shot, Roadblock and Payload. Teaming with the Oktober Guard, they destroy an asteroid that was headed for Earth. Sci-Fi makes an appearance in issue 25 of the Devil's Due G.I. Joe series. He is part of a demolitions team sent in to destroy EMP generators on Cobra Island. Led by the Joe Mercer, the team does so, but not without the deaths of Flash, Mainframe and the rookie Joe member, 'Hacker'. Jinx, another member of the team, survives. Sci-Fi is later seen fighting Cobra operatives in Peru. In the