An e-mail received today:
Hi. I am not a student at your school but the professor of my class is out of town and I am stuck on a homework problem. If you could help me then I would appreciate it. I need to work the following problem, using only rules of inference and not conditional or indirect proofs.
. . . logic problem follows . . .
It used to be that when you tried to get strangers to do your homework for you, you would pretend it wasn’t homework.