A professor at the Harvard Law School reads the following evaluation of his accounting course at the beginning of the first lecture each year:

Q. Rate the instructor overall:
A. You either like accounting, or you don't.

Q. Rate the reading material:
A. You either like accounting, or you don't.

Q. Rate the assignments:
A. You either like accounting, or you don't.

Q. Rate the course overall:
A. You either like accounting, or you don't.  I don't.