 I'm sure somebody's already told you that, but if not, turn off your cell phones and pagers right now. After the advent of cell phones, where did the inevitable march of technology take us next? Straight into using cell phones to take pictures. And that required a warning, too. Here's legendary newsman Tom Brokaw instructing the audience before the second debate between Barack Obama and John McCain, October 7, 2008, at Belmont University, Nashville, Tennessee. So tonight...