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The discussion here doesn't really bother me. I feel like people are making a good faith effort to understand and are asking questions that help develop better intuition. And this is a good example that helps develop an understanding of thermodynamics. (Another favorite of mine is "why can't you have stealth in space?")

I feel much more frustration when arguing about impractical engineering proposals (e.g. solar roadways, waterseer, hyperloop, or the ocean cleanup project), since people seem to have a much more biased drive to believe in their feasibility, and can't really be reasoned with.

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