I'm getting really tired of startups getting a pass on basic physics. Presumably because people are hungry for magic technological changes even though they aren

I'm getting really tired of startups getting a pass on basic physics. Presumably because people are hungry for magic technological changes even though they aren't going to happen. Self filling water bottles, solar roadways, hyperloop, Mars colonization; it's just infuriatingly easy to capture the imagination, and dollars, of hopelessly hopeful "futurists". No it's not possible that you can convert heat into cold without creating more heat than you started with. This is obvious. Hypothetically, a value add could be less accidentally-created heat, but if that's the value proposition, I wish they would talk about that in sufficient detail to be convincing instead of impossible marketing twists. I mean, if the Stirling engine based tech was that much better and is that old, why do we have compressor-based AC at all? It's the same thing with the hyperloop. The damn idea is 100 years old. In a world of shinkansen, you'd think if hyperloop was feasible, it would already exist.