Even further OT: I was good friends with Frank Calegari's older brother (also a mathematician) at school, and used to play bridge with Frank at university. I'm

Even further OT: I was good friends with Frank Calegari's older brother (also a mathematician) at school, and used to play bridge with Frank at university. I'm not a mathematician but I do sometimes read articles when they're posted on HN, so it was a surprise to see someone I know mentioned. :p