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 Investigates they can about the particular legend or phenomena an episode focuses on. They meet with local residents, listen to eye-witness reports, study documentation, conduct forensic experiments on physical evidence, and conduct on-location archaeological studies. At the end they review and discuss their findings and each investigator gives their opinions from different points-of-view. Each episode is an hour long, including commercials. The Cryptomundo blog by Mothman researcher Loren Coleman is an indepth criticism of the October 26, 2006, "Sci-fi Investigates" broadcast's "Mothman" episode. Coleman wrote that while it had a few moments that are pure entertainment and certainly funny, it had