then why are feet useful measurements of height when 90% of people are between 4ft and 6ft? They aren’t. You just know the scale in your head, so when someone says they’re 7ft tall you say “dang that’s tall”. That’s it.

to be clear, we use feet and inches, and there is historical precedent for breaking things down once they get past a certain grouping, we only have 10 fingers after all. To me the difference between 200cm and 220 is literally fuck all. You ask me the difference between 4 ft and 6ft and i can pretty quickly tell you.

I find it weird that when measuring height in metric, people using cm exclusively, i've noticed this a lot actually, people will use cm or mm in places where it arguably doesn't make any sense. I could see the justification for doing math maybe, but like, that defeats the whole point of it being metric no?

Shouldn't you be using meters and cm for height specifically? Since most people are a good bit over one meter i feel like it would make sense to do it that way. But then again that's just kind of a shit bucket worth of options you have, ideally you would use decimeters, but nobody uses those things for some reason.