Some of these services already exist but have yet to hit the mainstream.

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It says in part that self-driving cars are closer than they appear because some of the prerequisites already exist.

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Oddly, it looks like the app selection is still missing some key titles that already exist on Windows Phone 7, but Samsung's made its own efforts, with preinstalled apps running the gamut from the useful (ChatON) to the less so (Samsung's own Music Hub).

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They want to double down on some of the inequities that already exist in the tax code.

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In some areas of warfare, fully automated systems already exist.

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Some of these properties, like wood that can resist fire, already exist.

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Second, while privatisation may generate greater returns for some individuals than Social Security, it cannot solve the funding problems that already exist.

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