In case any of you were ever in doubt about whether I'm on holiday or actually attending the workshop, I hereby attach a photograph as evidence that I was/am in the room participating in the workshop. I'm sorry my face is not in the picture, since I took the picture. You just gotta trust me. The instructors are the world experts on the program. They can program in C++ and Fortran, and understand all those complex chemistry equations and models. They speak in acronyms. And they are funny too. They might have PhDs from Princeton, but I wouldn't know unless I ask them, because they go by first name basis. Such are Americans.