I'm always meeting people who swear up & down they were at Applestock (Jetrink for instance). They guilt trip me: "Baba, don't you remember me?"

Was Jetrink really there? Were any of them? Due to the if-you-remember-you-weren't-there factor, I don't make much of a distinction between those who SAY they were and those who WERE.

Really—are the two states of being so radically different?