I'm hard on subs

I'm going to be attending my mom's graduation in the San Francisco area on Thursday, and thus have to miss classes on Thursday and Friday. This is the second-to-last week of classes, and my lab final exam is scheduled for Thursday and Friday, so I was careful to line up subs many weeks ago.

On Sunday I learned that one of my subs had just gotten out of the hospital, and had to cancel. And, just now, I learned that my other sub is currently in the hospital recovering from emergency surgery.

Lesson learned: Don't sub for me.

[Update: I wasn't able to find any other subs, so ended up having to cancel classes on Thursday and Friday and delay an exam. I've rarely seen my students so elated.]