The entire premise of SPOT and BDOs hinges on the assumption that everyone flying is in a good mood: that they're embarking on their Disney World vacation or honeymoon or are about to seal a business deal or are going to their son's wedding.

Guess what? Some passengers are flying to funerals; others are flying to visit sick relatives who may have days left to live.

And the last thing those passengers need is to be judged harshly, and potentially face extra screening, because they did not sufficiently satisfy a BDO that their jitters are not a precursor to blowing up a plane.