Katie Couric's Notebook: VP Guessing Game

Twenty-four hours is a lot of time to fill. So, every day, cable channels have begun to play a classic political guessing game: Who will be picked as the vice presidential nominees.

The game is timeless. But so is its most important, and most forgotten rule: People who know don't talk; people who talk don't know.

For the rest of my Notebook, just click the monitor.