I understand that the practical implications of room temperature superconductivity would be huge.
I simply found the "= perpetual motion machine" part strange given that such machines are known to be impossible while >0K superconductivity is known to be possible (and if superconductivity is impossible past a given temperature, it would be a surprising coincidence if that temperature happened to be 273.15K). Now that I read the comment again, the original commenter probably didn't mean it literally.
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I understand that the practical implications of room temperature superconductivity would be huge.
I simply found the "= perpetual motion machine" part strange given that such machines are known to be impossible while >0K superconductivity is known to be possible (and if superconductivity is impossible past a given temperature, it would be a surprising coincidence if that temperature happened to be 273.15K). Now that I read the comment again, the original commenter probably didn't mean it literally.
Well it is literally perpetual motion.
And yes as far as exact temperature it's about qualitative differences, not quantitative ones.
The first revolutionary hurdle is making it work on a desktop with a simple fridge-style cooling mechanism.
The second hurdle is making it work around 40-50C, then your phone and almost everything can take advantage of it.