This is America. We don't know stuff about Celsius because forget international standards.
Do you seriously use it in science lessons and things though?
Like, I get using it in your regular day-to-day speech, because my parents still do that since they were brought up with Fahrenheit.
But it's so awful for anything like chemistry. Comparing the temperatures that things occur at seems so much simpler when you set out a rule like water melts at 0, and it evaporates at 100 as you increase.
Also, I don't know Fahrenheit at all. I couldn't tell you what was hot or cold.
Only thing I know is that it crosses over with centigrade at -40. :3
