Just had a look at the consultantspeak describing the Screener Training Plan -- most definitely the public will see that something is being done by people who likely couldn't get a C150 started, let alone get it to another airport undamaged.
It all so richly reminds me of the movie, Chicken Run.
In the meantime, we see that the passengers, in spite of the pronouncements from high authority, have twigged to the situation and know exactly what to do. All the would-be bombers, hijackers and air ragers quickly find themselves piled on by passengers who know that their self-preservation relies solely on their own actions.
Agreed that it is worth screening for guns, bombs and large knives. Leaving off intrusive searches for everyday tools might just reduce the hassle factor that passengers may again enjoy flying.
If instead of treating passengers and crew as potential terrorists, they were treated and educated as important resources ready to counter terrorist attempts, they might even feel welcome.