Technologies in Minority Report newspaper" would be released, he predicted "around 2015." Tech Watch's 2008 article "‘Minority Report’ e-newspaper on the way" noted that Hearst was "pushing large amounts of cash into" the technology. Spielberg decided to add the jetpacks worn by the policemen as a tribute to old science-fiction serials such as Commando Cody, even though the scientists considered them unrealistic. The jet packs are the only future technology depicted in the film which originated in science fiction. They already exist and perhaps their most famous flights occurred in the pregame ceremonies before Super Bowl I in 1967 and in Los Angeles in
Directed set Directed set In mathematics, a directed set (or a directed preorder or a filtered set) is a nonempty set "A" together with a reflexive and transitive binary relation ≤ (that is, a preorder), with the additional property that every pair of elements has an upper bound. In other words, for any "a" and "b" in "A" there must exist "c" in "A" with "a" ≤ "c" and "b" ≤ "c". The notion defined above is sometimes called an upward directed set. A downward directed set is defined analogously, meaning when every pair of elements is bounded below. Some authors (and