Doofus writes: The Washington Post has a profile of Roger Fidler, who "invented" the tablet computer in the 1990s, while working as a visionary for newspaper firm Knight-Ridder. He is now embroiled in the Apple/Samsung legal war, as an expert witness. Fidler admits that other prior art influenced him, such as the tablets being used as computing devices in 2001: A Space Odyssey. Prior prior art.
Doofus writes: Roger Fidler, who worked for Knight-Ridder, had a "skunk-works" lab next door to Apple in the 1990s.
Fidler invented the "tablet" computer in 1994, long before Apple patented the design (2004). Of course, he admits (in the article) that the tablets in 2001: A Space Odyssey may have influenced him. Prior prior art.