its called imperial and metric is far more acceptable in the field of science and the us customary system is based off a fucking acorn while the metric is far more precise. the imperial system is not retarded its fucking stupid.
hm... either the whole world learns imperial or the remaining 3 countries that use imperial system learn metric... I don't know what is better hm...
You lot can calm down, this is nothing against you, it's more against Americans with who can't learn how to use the easier system