Here’s a quick quiz:
I weigh 71 kilograms, and am about 1.82 meters tall.
a.) Do you have an idea of about how much I weigh and how tall I am?
b.) Am I taller or shorter than you, and do I weigh more or less than you?
If you don’t live in the United States of America, Liberia, or Burma, you most likely can answer both of these questions pretty much without any hesitation. If you do live in one of those three countries, then without the help of a calculator, or a quick search on Google, chances are you would have to think a bit about question “a,” and would struggle with question “b.”
There is a huge disconnect between the science that we do (SI units, commonly interchanged with the Metric System) and how we live our daily lives, (U.S. Customary Units, not Imperial Units).