You don't give any reference, so I can't grasp what your thought is. Why don't you at least clue us in to which post you are replying.
Bag checks work very well for security of airlines andand pilfering of manufacturing facilities. Whatever gives you the idea of saying it won't work on schoolbags or briefcases?
It seems that you are ignorant of security procedures?
I know from personal experience that what you describe is trivial to defeat.
If you think bag checks are a viable security measure to prevent school massacres, you’re too stupid to be part of the discussion.
And I don’t say that lightly.
“Why don’t you at least clue us in to which post you are replying.”
Uh, that would be obvious from the “To” field at the end of the post, just like every post on FR. Thought you’d have figured that out in the last 3 years you’ve been here.