I imagine that co-editors must be something like co-regents. One knows from history that this has both uncommon advantages and unexpected tensions. I was very pleased therefore to receive this note from my co-editor this week: “I'm really quite proud to have you as my co-editor.” OBSERVATION: My co-editor is quite a celebrity. I myself had one of his books on my shelf long before I knew him, or knew that I'd know him. The one political co-regency which exists today (I think it is the only one) is Andorra.