This is how senile I'm getting: I had a guitar come in today that I forget I had purchased. As a matter of fact, just the other day (between purchase and receipt), I was bemoaning that it had sold, as it was the best price I had seen on said guitar. And then I saw a blem show up on zZounds, and almost bought it again. Fortunately, my memory cells took the jolt and said, "hey, wait a minute, didn't you just buy one of those?" Indeed, I had.
So I guess what I'm saying is, one doesn't have this problem if one is senile.