Security expert Bruce Schneier concisely describes our broken approach to airport security:

It’s not even a fair game. It’s not that the terrorist picks an attack and we pick a defense, and we see who wins. It’s that we pick a defense, and then the terrorists look at our defense and pick an attack designed to get around it. Our security measures only work if we happen to guess the plot correctly. If we get it wrong, we’ve wasted our money. This isn’t security; it’s security theater.

Read the whole thing at The New York Times.