Yes, negative numbers exist, and numbers beyond 100. But they’re not that important.
They kinda are though lol.
The 100 degree scale is about describing the normal range that humans interact with their environment in
But what about sauna. What about really cold weather. What about cooking. Hell, what about my PC. What about when I have a fever. What about really hot weather… The temperatures are about much more than the fuzzy idea about normal-ish weather in certain places on earth.
Even if it can get extreme beyond that, that doesn’t mean the 0-100 scale isn’t useful.
It just means it doesn’t have much benefit to it at all. The whole argument for it is silly.