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 Sci-Fi on the Rock Sci-Fi on the Rock is an annual science fiction, fantasy and horror festival held in St. John's, Newfoundland, Canada. It was founded by Darren Hann and Melanie Collins in mid-to-late 2006, and held its first festival in 2007. It began in 2007 at the Hotel Mount Pearl, moving on to be housed in the Holiday Inn in St. John's as of April 2008. The convention made another move in 2016 to the Sheraton Hotel Newfoundland. The festival has had a number a notable guests both from Newfoundland and beyond, including science-fiction author Kenneth Tam ("Defense Command",