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Have you tried this product? What do you think of it?

And they wondered how the Soviets infiltrated the project so thoroughly.

Some of us are explicitly forbidden to take aspirin by their Dr. so the population of asprin takers is biased towards a cohort for whom asprin is safe.

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Helium in the atmosphere is almost two orders of magnitude more common than xenon and three times as concentrated than krypton. Both are extracted from air. Even though He is const…

A real material would. But thermodynamically OP is right, you'd get a vacuum.

It would create an almost perfect vacuum. You could then extract work by collapsing the vessel. The free energy for the work would come from putting the trapped helium (state 1) in…