. . they're less interested in things that could actually blow up a plane, and more interested in things that will delay you long enough to convince you that "Republicans are protecting you". Some nitwit tried a shoe bomb, so shoe bombs is it now.
Before 9/11 (and post Locerbie) they were interested in notebook computers actually working. So now it's sandles. Basically, anything that will make it difficult for you to get on the plane is just fine. If anyone actually wants to get a bomb on board, they're going to get a bombo on board. This is all just for show.
So a plane is going to get blown up and a scapegoat will be named. "Fred Pufooknik failed to ask an 86 year old grandmother to turn on her notebook even though she was not wearing a head scarf so was obviously a Near Eastern operative in disguise".
Pffffffft.