I come into a classroom that is already in session. The door is at the rear on the left side of the class, which is all windows. I go just a few rows up and sit down at a desk along the right side of the room. Apparently I was specifically invited to this classroom, along with Victor from the climbing club, to answer some particular question. And just then, the question is posed to me.

"I'm sorry," I say, "I just came in, and I don't yet understand the context of the class well enough to answer that question."