You know whose blog you need to be reading? Bruce Schneier's. The guy thinks through hard security problems and sees the things we (as the public) don't see. And it kills me that I don't see these things as easily as him. For instance, he was asked about installing metal detectors in a school in Tacoma, WA following the school shooting there. Can you guess what he said?
[Metal] detectors would be a waste of money. "The goal isn't to stop shootings in schools. It's to stop shootings," he says, by investing in ways to ensure a kid doesn't resort to violence at all. "If a kid shoots another kid in the playground because there's a metal detector in the building," then the physical security was ineffective, he adds.
From "Schneier On Schneier" at Dark Reading
That's common sense, but why isn't it the first thing that people think? Why isn't it the first thing that I think?