As an old bloke, i still think in feet and inches . People tell me I am old and behind the times, Metric is the way to go. Just found this onine from Eric. (Quote). Oh, I don't know, let's pick a big number, say 10 million. And divide the Earth's circumference... no, pole-to-pole... no, oh heck, let's make it just a quarter of the way around. Why not? So one ten-millionth of a quarter of the circumference of the earth. That distance. That. We'll make that the standard way to measure everything!
Nobody would do anything that arbitrary and random and expect it to catch on :(
Except it did catch on. That's the meter. (end of quote) I am reminded that my maths teacher would say the metric system is designed for those who need their fingers to count.