Or, as Dilbert creator Scott Adams asks, what is your permanent age?. Good question. I can't decide if I'm permanently 29 (high school and early college years were a blight) or permanently 2029 (I am more conversant with the Peloponnesian War of the fifth century BC than I am with the slightly more recent Vietnam conflict).
Anyway, read the whole thing and decide. What is your permanent age? Great post. Hat tip to Glenn Reynolds.