"Lb" is the abbreviation for "pound"? How does that make any sense? Is it some kind of Latin thing, like "Pb" being the symbol for lead?
And how did a "z" creep into the abbreviation for ounces?
My father in law was once trying to tell me an email address, and he called the "@" "that thing that looks like a lowercase a with a long tail that almost circles it".
"That's called 'the at sign' or just 'at'", I told him.
"At? Of all the words that they had to come up with an abbreviation for, they picked 'at'?"
He has a point. Why do we need a special symbol for that tiny word?