Why I should never be a professor

Stuart Gazes: And I am about to use purple chalk for what will be the first... and, I guess, the last, time in this course.

What I would have said: And I am about to use purple chalk for what will be the first... and, I guess, the last, time in this course. Hey, that looks pretty cool. I like that. I should use purple for all of the most interesting parts. You know, my high school math teacher, Liz Caffrey, who taught me calculus, had a math teacher who was so obsessed with the color purple that if you wore purple on the day of the test, you got an A. Don't try that on me, it won't work. The teacher wore purple every day, except for days when she wore her red-check gingham poufy-skirted square dancing dress. And then, my other math teacher's son, who was a math wiz himself and who attended our high school in the years before I did, was obsessed with the color. He was always wearing it in at least one visible article of clothing. His hair was dyed purple, his hats were purple, his watchband was purple, and the carabiner that he used to hold his keys was purple. He had colored the glowing apple on his powerbook purple with a sharpie. He was, for all intents and purposes, purple. Don't think he ate people, though. Only chicken-- he was very picky. So, back to two-slit interference...