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 Valley Con raised in the charity auction for the Shriners Hospital for Children. Sci-Fi Valley Con, Part 3 was held on June 27–29, 2014 in Altoona, Pennsylvania at the Jaffa Shrine Center. Unlike the previous year, the convention utilized both floors of the venue for exhibitors and guests. In addition, it was the year the con debuts their first official convention vehicle; which was a Jurassic Park Jeep Wrangler (#12). It was built and funded entirely by the Sci-Fi Valley Con's promoting company, Assett Conventions LLC. The 2014 show also featured several other movie cars, such as; the Back to the Future