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 Dine-In Theater Restaurant 2,200 people daily during peak periods, making it the park's most popular restaurant. Thai movie theater operator EGV Entertainment opened the EGV Drive-in Cafe in Bangkok in 2003, in a very similar style to the Sci-Fi Dine-In. The Sci-Fi Dine-In has received mixed reviews. "USA Today"s list of the best restaurants in American amusement parks ranks the Sci-Fi Dine-In fifteenth, but many reviewers rate it more highly for its atmosphere than for its cuisine. Ed Bumgardner of the "Winston-Salem Journal" wrote that the food is more expensive than it is worth, specifically calling the restaurant's roast beef sandwich both delicious