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 "His Majesty's New World"), comic-book artist Paul Tucker ("The Underworld Railroad", "Google John Smith"), actor Brian Downey ("Lexx", "Millennium"), actor Jeremy Bulloch ("The Empire Strikes Back", "Octopussy"), author William Meikle ("The Midnight Eye" series), horror author Matthew LeDrew ("Black Womb", "Roulette") and author Shannon Patrick Sullivan ("The Dying Days"). Sci-Fi on the Rock's first festival was held on April 1, 2007 at the Hotel Mount Pearl (formerly Chateau Park) in Mount Pearl, Newfoundland. It featured special guest authors Kenneth Tam and Shannon Patrick Sullivan, and local business/fangroup, Vader Party. As well as featuring special guests, the festival featured workshops throughout