Two things learned today, so far, and both of them decidedly not the sort I really wanted to learn. #1 was that I learned one should not monkey about with a stuck blade on a rotary cutter. One should, if one were smart, just throw the darn thing out! It sure would be nice if some brilliant mind could come up with a rotary cutter that could differentiate between what it's supposed to cut and a finger. Before you ask...I'm not bleeding - much.
#2 lesson in stupidity is that one should remember when shutting the door on the medicine cabinet that one should really remove one's thumb from the shutting mechanism.