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 on the Rock Rock festival organizer) and Matthew LeDrew (author of the Black Womb series). Sci-Fi on the Rock TV plans to air some "on-location" episodes from the Sci-Fi festival. Season Two of Sci-Fi on the Rock TV saw the return of Steve Lake and Ellen Curtis as hosts, but also Ellen's departure and the addition of Melanie Collins as co-host. Also, Season Two was filmed in a new location, with new equipment and new opening sequences. It is available to be watched at the Sci-Fi on the Rock site. Sci-Fi on the Rock Sci-Fi on the Rock is an annual science fiction,