Keeping up with this idea of unknown unknowns to the point of belaboring it (as we say in New Orleans, if it’s worth doing, it’s worth overdoing), Carol and I arrived in Oxford with no thought of signing up for any sort of walking tour of the city. After all, I had spent six weeks here in 1971 matriculating in a summer program at Oxford University’s Exeter College. So the visit to the city began very much as a known known. I simply wanted to show Carol that I was once an Oxford scholar.