The idea of the Labor Theory of value fits perfectly with a world of cyclical futility.

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For a more recent, if similarly calamitous, manifestation of the power of chaos theory, consider how different the world would be today had not a devout, soft-spoken Saudi Arabian engineer inherited a significant fortune from his estranged father.

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As the part of the world that shares a vision of democracy and human rights with America, Europe should, in theory, be well-placed to advise and warn America about its policies.

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This was a radical theory at the time, which predated the concept of the world as billions of years old.

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The two communities are at odds over whether string theory is a series of abstract puzzles or whether it says something about the real world.

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In a world of mainly unfettered monarchy, some 17m people had been won, in theory at least, for the principles of representative government.

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Brian Greene one of the main proponents of String theory our ancestor were hunters and they needed to see the world in a precise position so they could hunt them.

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Newtonian physics is a simplification of our visible world that worked until advanced scientific techniques allowed scientists to conceive of quantum theory as an explanation of how our universe works.

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Investment banks ought, in theory, to be able to turn a handsome profit from this great sea of money as it swirls around the world.

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