Why not just scan and search everyone before they even enter the airport, along with at the normal checks. If there are holes then we should do our best to fill them in any way possible.
Sounds like a pretty lame off-the-cuff response to the observation in the OP that, in essence, every bureaucracy will fail at some level. This particular example happens to be just about as egregious as it comes since every carry-on bag is x-rayed to detect objects that have the distinct shape of a pistol.
Your response is so lame and so off-the-cuff as to beg the questions (see if you can keep up, m-kay?):
1. What would happen to airport traffic in general, and airline flights in particular, if your idea to "scan and search everyone before the even enter the airport" actually happened? Where would this "scan and search" take place? Would airports have to build special structures alongside the parking garages to do that? Who's going to pay for that? Who's going to pay for the additional TSA people that such an idea would mandate (besides the taxpayer, of course).
2. What would all this "scan and search" stuff do to airports and airlines that are already on the razor's edge, in terms of profitability? Do you have any idea what you're talking about?
These are just a few ideas off the top of my head. You may think of even more.
My point is, your lame off-the-cuff remark has serious implications for any business - and yes, airports and airlines are businesses and not your personal property to dictate where and how said businesses should operate.
The TSA is a government bureaucracy run by government bureaucrats. Have you ever had any actual work experience in dealing with the government and its bureaucracies at any level? If you did, you just might think twice about your lame, off-the-cuff remarks.
Bitchslapped for being lame.