What the World Looks Like, If You Move Backward in Time [Video]
By George Musser
This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American
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Oops, I said my last post on the recent Foundational Questions Institute conference would be my final one, but I can't resist just one more. At the conference, Gavin Crooks at Lawrence Berkeley Labs, who studies molecular machines and gave a great talk on how life balances time asymmetry with thermodynamic efficiency, showed this brilliant short film by Rocketboom. In it, a woman walks, skips, and jump-ropes through the streets of New York while everyone else moves backwards. Of course, she's the one moving backwards—a vivid illustration of the time-reversibility of the laws of physics.
As Crooks noted, the most remarkable thing is how the passers-by seem not to notice. A New York minute, it seems, is not just sped up, but time-reversal invariant.
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