About the TSA allowing knives less than 2.36 inches long (the emphasis is mine):
“I fly every week (and opt-out from the body scanners), and am absolutely sure that the recent policy changes make no material impact on airplane security. Someone at the TSA probably made the judgment that if an incident occurs, it would be better if the policy allowed it, than if the security screenings failed (which of course, they do for items like this).
“Now that may seem cynical, but I believe it also is designed to protect the traveling public from even more onerous screening requirements. Now if something happens, they just re-introduce the ban. If something had happened with the ban in place, the searches and restrictions would have reached untenable levels due to political and media pressure to ‘do something’.
“Not everyone in the TSA is an idiot – many good people are trapped by a flawed system under immense political pressure to have impossible perfect security. Congress shoulders far more blame than the TSA.” — Solar winds, ex parte Milligan, TSA stories, and many other interesting things…
That certainly rings true.