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You’re underestimating the HN crowd. I’d expect everyone halfway scientifically literate to have an understanding of the Kelvin scale. It’s also quite an intuitive scale, physically, especially if you’re coming from Celsius.

I think you're wrong. I suspect most people on HN have an above average interest in physics and would therefore have a reasonable understanding of the Kelvin temperature scale.

I learned kelvin in high school chemistry and I'm not sure why you wouldn't use kelvin when talking about liquids that far negative in celsius/fahrenheit and that close to absolute zero.

Sure, I learned kelvin 20 years ago in chem too but in the last 20 years the only time I see it mentioned is literally on HN. Or GamersNexus.

> So like 3 people...

Just about everything human-built around you had someone consider the thermodynamics of it during the design.