I would use the metric stuff and the non am/pm but since I have a hard time learning and calculating things, I can't really... And my school didn't bother teaching me until the year I dropped out. My boyfriend lives in Canada and uses the metric system and Celsius, so I can usually, at least, guess what it is. It really helps that we both just assume what one of us means when we're talking about any sort of math, cause neither of us remember how to convert it. Other than google, of course.
And thanks for calling me and idiot, Richard. I'm just one because no one bothered to teach me any different. (I'm not upset... it's a joke)