Most people never experience anywhere near 0F in their lives.
> -20C to -40C seems much more arbitrary as a way to measure the zone humans mostly live in.
The zone most humans live in does not routinely (if ever) get anywhere near -20, to say nothing of -40.
Millions do experience 0F, and it’s ok to not use the full range. At or around 0F is cold, as you move closer or beyond it, it’s cold. As you move closer to or beyond 100F, it’s hot. Most people would likely prefer to never deal with <0F or >100F.
That’s not even an argument. Billions never experience freezing temperatures let alone 0F, and it’s ok to use negative numbers.
> At or around 0F is cold, as you move closer or beyond it, it’s cold.
The exact same statement can be made about 0C. Hell if you live in a subtropical area 10C is cold.
> Most people would likely prefer to never deal with <0F or >100F.
Most people would likely prefer to never deal with < 15C or > 30C.
Can we stop arguing now?