Newton's First Law, the... Law of Inertia, refers only to bodies that are subject to no external forces. It is tempting to say that Newton postulates… - Tim Maudlin

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Newton's First Law, the... Law of Inertia, refers only to bodies that are subject to no external forces. It is tempting to say that Newton postulates that such bodies "continue in the same state of motion," but such... would miss the revolutionary aspect... the First Law specifies exactly what counts as "the same state of motion." For Aristotle... a piece of aether in uniform circular motion about [earth,] the center of the universe is always in "the same state of motion," and so there would be no reason to seek out external causes... In Aristotle's physics, external causes are responsible for unnatural motion, such as a rock moving upward instead of down. So for Aristotle, the falling of a stone... requires no external cause, and the continued rotation of a sphere of fixed stars requires no external cause: this what these sorts of matter do by nature.

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About Tim Maudlin

Tim William Eric Maudlin (born April 23, 1958) is an American philosopher of science who has done influential work on the metaphysical foundations of physics and logic.

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Alternative Names: Tim William Eric Maudlin
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Perhaps the most vexing question confronting any study of Bell's inequality, and the experimental observation of violations of that... would never have been discovered if not for the existence of quantum formalism. On the other hand, the inequality... is derived without any mention of quantum theory and the violations are matters of plain experimental fact. So the explication and analysis of the importance of Bell's work can in principle proceed without mentioning quantum mechanics at all. Should an account of Bell's inequality emphasize its historical roots... or... sever those ties in the interest of clarity? ...I chose the second option ...the interpretation of quantum theory is troublesome enough ...to overshadow and confuse the relatively straightforward proof on non-locality.

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