A Confession

Sometimes in conversation, I instinctively nod at questions I don't know the answer to, or references I don't recognize.  When this happens, I'm stuck with a dilemma.  Do I ignore it and hope it has no more bearing on the conversation, running the risk of looking like I'm either not paying attention, or completely uninterested in the conversation?  Or do I reverse myself and inquire about the point at hand, making myself look like I'd only momentarily lapsed in concentration?

Usually it goes about 50-50.

Fargus...