Three Laws of Robotics robot's entire developing consciousness is based. This concept is largely fuzzy and unclear in earlier stories depicting very rudimentary robots who are only programmed to comprehend basic physical tasks, where the Three Laws act as an overarching safeguard, but by the era of "The Caves of Steel" featuring robots with human or beyond-human intelligence the Three Laws have become the underlying basic ethical worldview that determines the actions of all robots. In the 1990s, Roger MacBride Allen wrote a trilogy which was set within Asimov's fictional universe. Each title has the prefix "Isaac Asimov's" as Asimov had approved Allen's outline
Sci-Fi Dine-In Theater Restaurant the Tides" (broiled fish), and "Journey to the Center of the Pasta" (vegetable lasagne), but these have since been replaced with more descriptive names. A popcorn bisque was once on the menu, but it was removed due to poor reception. In 2003, EGV Entertainment, a movie theater operator in Thailand, opened the EGV Drive-in Cafe in Bangkok, explicitly modeling the restaurant after the Sci-Fi Dine-In. Wichai Poolwaraluk, the company's executive president and chief executive officer, visited the Sci-Fi Dine-In in 2000, and was inspired to open a similar restaurant. He said that, while he was eating at the Sci-Fi Dine-In,