When was the metric system designed?

Iearn it when your young and your mind is like a sponge. Not when your old and like a dry sponge ... its hard to get used to it.

Player #1489294, Australia managed no worries and it is so much easier to use although I still do people's heights in ft and inches. It has come down to a case of USA doing things the hard way vs the rest of the world.

If you live in a country on the metric system, you learn the metric system. US business loses millions because of societal resistance.