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(2) Outer space. Because the vast reaches of outer space represent a limitless frontier, they also represent a limitless possibility for escape from world politics. But the final frontier still has a barrier to entry: Rocket technologies have seen only modest advances since the 1960s, so that outer space still remains almost impossibly far away. We must redouble the efforts to commercialize space, but we also must be realistic about the time horizons involved. The libertarian future of classic science fiction, à la Heinlein, will not happen before the second half of the 21st century.

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Science fiction (Wikipedia) Science fiction (sometimes shortened to sf or sci-fi) is a genre of speculative fiction, which typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel universes, and extraterrestrial life. Science fiction can trace its roots to ancient mythology. It is related to fantasy, horror, and superhero fiction and contains many subgenres. Its exact definition has long been disputed among authors, critics, scholars, and readers.