Comment by moregrist

People who major in mathematics are really good at mathematical abstraction and are _notorious_ for their inability to do basic arithmetic. To the degree that it's a stereotype with a strong grounding it reality.

In college we had a rule for splitting the check at a restaurant: the youngest non-math major had to do it. Not being a math major, I'm not sure what happened when the table was all math majors. It wasn't a frequent occurence; there was a strong likelihood of a physicist or an engineer being around.