I was at two book signings recently at my favorite book store. The signings and talks were interesting and informative. However, at one book signing, during the author's talk, several people had their cell phones go off, rather loudly too, and this kept interrupting the author's train of thought, as he continued to stop while the people answered their phones. Usually, I believe, at most signings people are asked to turn their cell phones off, or most know to do this. This…