SystemDisc

What you are used to is definitely best for you, but I’m talking about the general practicality and usefulness in specific contexts. C in the context of states of water makes sense, and is practical and useful. F in the context of weather makes sense, because 0 to 100 is just normal weather in places with four seasons. In the context of weather, it is both practical and useful. K is practical and useful in pretty much every scientific context.

I grew up in Rochester NY, and there are many days with a zero or subzero windchill. Once it gets below 0°F, it is definitely actively dangerous. I’ve waited for a school bus in 7 to 10°F weather without issues.

That goes in line with what I was saying. F makes sense for weather, and not much else. C makes sense for states of water, and not much else.

What is easier than “over 100 dangerous; under 0 dangerous”?

For normal weather, 0°F to 100°F is easier to understand than -17°C to 38°C. Just like 0°C for freezing water and 100°C for boiling water is easier to remember. It’s just how our brains work. We like nice round numbers. Plus, there’s a higher fidelity between 0 and 100 than between -17 and 38.

That’s not true. NYC frequently reaches 0°F and is home to 15 million people. All of northern US, and all of Canada frequently reach 0°F. It’s a fact than anything below 0°F is actively dangerous and anything above 100°F is actively dangerous.

In my opinion, Fahrenheit is a much better system for weather. Anything below 0°F and above 100°F is actively dangerous for a person to exist in. Anything in between is just normal weather. For anything scientific, I think K makes more sense than C. To me, C is actually only rarely useful.

Edit, because people seem to be offended by the suggestion that the system they don’t use is more practical in a very specific context:

What you are used to is definitely best for you, but I’m talking about the general practicality and usefulness in specific contexts. C in the context of states of water makes sense, and is practical and useful. F in the context of weather makes sense, because 0 to 100 is just normal weather in places with four seasons. In the context of weather, it is both practical and useful. K is practical and useful in pretty much every scientific context. To say memorizing -17 to 38 vs memorizing 0 to 100 is the same is silly, because 0 and 100 are very meaningful to the human mind. Of course, what you are used to will be what your mind immediately goes to, it does not change the fact that 0°F to 100°F for weather is more understandable, 0°C to 100°C for freezing and boiling water is more understandable, and 0°K being truly no thermal energy with units the same size as C is better for scientific contexts.