I'd want also to add the others in giving John a big Thank You for all the effort and guidance, the helping hand of a field expert has done charms and made a difference, and prepared us for better self-learning. I'm going to miss this advice. Can't help but envy John's grad students. On the bright side the course has acted as a pole attracting a clever community, and we should manage to not lose contact and disband in all directions. I'd be open to furhter exchange here and elsewhere and talk, time permitting, about pending book chapters, Tai-Danae booklet and other applied topics. Nel mezzo del cammin, I could be useful to some starters and would welcome dialog with the experienced guys.