1. It's a waste of time since everyone is already screened. Screening some a second time (not the same as secondary screening conducted to resolve an alarm or suspicious object detected under x-ray) does not add to security.

2. The terrorist profile matrix is outdated and inflexible. This is especially true whenever small children are issued SSSS boarding passes or passengers who are rescheduled due to the cancellation of an original flight are issued selectee boarding passes.

3. It misses the point behind preventive screening. IF there is an honest belief that someone may be a potential terrorist (based on more than just the criteria used to issue SSSS boarding passes), then don't let that person board! This is the contradiction behind the whole selectee process. We're saying that we believe that someone may fit the profile of an actual terrorist but are going to mitigate that threat by screening that person a second time just to make sure they're not a threat to that particular flight. My approach is a sh*t-or-get-off-the-pot one: if there is bona fide belief that a person may be a terrorist, then arrest that person. Otherwise, leave that person the hell alone.