I still have a lot to learn

*I don't know how to remove bubble gum from a leather purse strap and clothing.

*I didn't know that it was still possible to lose a document on the computer. I assumed there were enough back-ups: the "do you want to save?" questions, the auto-saves, the temp files, etc... But, no. It is still possible to actually lose a half a day's work. Gone. Zap. Fuck. And, yes, I called the technical guy, and he said, "Sorry to be the bearer of bad news, but you lost it!"

There are a whole lot of other things I don't know, too.