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Kaufman quotes Newton’s law of inertia when it comes to moviegoing habits: An object in motion stays in motion.

That is the political law of inertia: Every action has an equal and opposite reaction.

A new confidence in scientific thought began to blossom, as precocious scholars like Nicole Oresme and Jean Buridan postulated the rotation of the earth and the law of inertia, more than a century before Copernicus and Isaac Newton.

Italian scientist and inventor Galileo Galilei was a pioneer in the experimental investigation of motion, devising the law of falling bodies and an approximate law of inertia, among many other hypotheses.

“The District’s speed camera program appears to defy the law of inertia, which posits ‘what goes up, must come down,’” said AAA Mid-Atlantic spokesman John Townsend in a statement Tuesday.