Celsius, Kelvin and Fahrenheit are clear. I suppose one of the other ones is Rankine. What’s the last one?

For distance and mass, zero means no distance and no mass.

For temperature though having none means no kinetic energy of atoms/molecules. It’s absolute zero, the zero Kelvin. So the other units are the weird ones.

But since zero Kelvin isn’t a phenomenon you’ll ever encounter in nature, it makes Kelvin a pretty unappealing scale for everyday life.

And thus we started making shit up…

P.S. My bad Rankine also shakes hands with Kelvin about absolute zero, very demure, very mindful.

You should add in programming languages with zero, null, empty, and the rest.

Centimeters aren’t metric. On a construction site if you use CM and not millimeters they use machinery to give you a wedgie.