"You are a sanctimonious old fart and have no right to give me a ’D’!" shrieked daltonistic Elissa at her Art History professor, poor Mrs. Lewis, who was now regretting intensely having decided to overlook, for pecuniary gain, the student’s red/green color blindness, a decision that wasn’t so much hypocritical (the Rothko painting under consideration notwithstanding) as simply sensible, since Mrs. Lewis had five growing children and a disabled husband and desperately needed a little vulnerary income to apply to her hemorrhaging checking account.