I dont know how we got on the metric system, but let me rant for a second. I have a buddy from poland. The U.S. is stubborn. And it's not just weights and measures. I'ts EVERYDAMNTHING.
He was an air traffic controller. Here, pilots must meet FAA regulations. In EVERY OTHER COUNTRY IN THE WORLD, they use a single, worldwide standard. So we refuse to be proficient in the MORE stringent worldwide standard and stick with our own LESS exact system.
We use a certain digital cell phone language, kind of like Java is a certain "computer" language. Canada and a couple other countries use it, a couple (including britain) use both. But all the rest use ONE SINGLE LANGUAGE.
Hell, the western calendar is a whole 1/4th of a day off, yet we refuse to just change clocks to make it accurate. Instead we have "leap year." Comparably in cars, this would be like having the timing off in your car. But instead of just fixing the timing, you just replace your rods, pistons and valves every few thousand miles. Right.
Sorry, so off topic.