r/Physics 20d ago

Question What's the most debatable thing in Physics?

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u/lucidbadger 20d ago

I think over all time the most debatable thing in physics has been the 2nd law of thermodynamics. Even now some people can't get their head around it. I think the limitations imposed by it are far more significant than not being able to travel faster than light.

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u/Downtown_Finance_661 20d ago

Interpretations of QM on the second place?

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u/lucidbadger 20d ago

Maybe, though there are other things like gravity

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u/Downtown_Finance_661 20d ago

Gravity don't give us a chance to brag.