I made a remark like that once. I said, "I don't know where John was when I moved from faculty row to the country."
Then he reminded me. He showed me a picture someone took back then. A bunch of friends posed in front of the old house for one more picture; just after we'd loaded the truck and were about to pull away.
I had forgotten about him skipping out on all the hard work and just coming by to have his picture taken.
An honest mistake.
