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Assessing existence while failing to embrace the insights of modern physics would be like wrestling in the dark with an unknown opponent.

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The bottom line is that time travel is allowed by the laws of physics.

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One of the strangest features of string theory is that it requires more than the three spatial dimensions that we see directly in the world around us....more

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Free will is the sensation of making a choice. The sensation is real, but the choice seems illusory. Laws of physics determine the future.

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We all love a good story. We all love a tantalizing mystery. We all love the underdog pressing onward against seemingly insurmountable odds. We all, i...more

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...quantum mechanics—the physics of our world—requires that you hold such pedestrian complaints in abeyance.