I have a pretty poor work ethic for boring things--college is fun and I like doing most of the work, but I couldn't bear adding and subtracting meaningless numbers for hours. That may or may not be typical of college students, but college probably signals something more like (general work ethic) x (interest + talent in specific field), while this would signal (general work ethic) x (tolerance for repetitive, boring tasks), which would have its own uses but doesn't necessarily apply to many jobs that usually require degrees.