Richard Reid, the Muslim Shoe bomber, when asked how he came up with the idea of hiding explosives in his shoes, said he just watched the security screeners to see what they did and didn't check. He said in just a minute or two it was obvious they didn't check shoes.
So now all TSA screening sites ask people to put their shoes into the gray plastic trays, unless of course you buy a pilots uniform, at which point they miraculously fail to check their shoes.
Ok, so learning from the lesson of Richard Reid, if one is bent on evil was to watch the security screeners, what do they continue to not check?
And if they continue to not check those items/places, what is the point?!
Unless of course, it is all "Security Theater" and accomplishes absolutely nothing other than having your person violated.