Comment: Sorry, I'll stick with the third law of thermodynamics

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Sorry, I'll stick with the third law of thermodynamics

And the second, for that matter.

Attaining a temperature of absolute zero involves getting a perfect crystalline structure in a state 100% devoid of entropy. This is quite difficult to do in a universe in which every single event that occurs increases the amount of entropy. Hence the third law, which can be paraphrased "It would take an infinite number of steps to achieve a temperature of absolute zero."

Attaining a temperature state below absolute zero means that entropy is actually decreasing in that matter; i.e. time would be moving backwards. Is it possible that physicists made time work backwards in a couple of atoms? I guess, but I don't believe they did. Much more likely that their experiment doesn't mean what they think it means.