I was under the impression that I was giving a short talk and somehow saw myself on schedule giving a 2 hour tutorial. Went along with this as I was in the middle of preparing my class lecture Math & Art – this offered me a way to be in the midst of the subject. The audience was really helpful with their comments and questions — really enjoyed meeting some new people too! Unfortunately I missed Lev’s presentation the day after — had to drive out to Santa Barbara for the Moxi museum pre-opening…