While reading this article I was interrupted by my calendar informing me I had a meeting. 40 minutes later I'm back. I definitely was Ms. Irrelevant (after listening politely for 20 minutes it took me another 20 Minutes to convince everybody else I was irrelevant because Chatty Patty kept interrupting me).

My question: if nobody else knows, should I myself at least know why I was invited? "Because the organizer thinks I know something which I already told him I definitely don't know, and he doesn't believe me" ?