Practicality

I've been playing around with an idea about practicality. In specific how it pertains to thinking about modern life and psychology. It is very encompassing. The idea is that people choose and perform the practical given a choice. Efficiency, that's what they called it in the Economics. I have another use for it however, to destroy most conspiracy theories in a jiff.
Let us take the most famous scandals in American history from the 80s-90s-And Before 2005. Let us consider 9/11 an act of our own government, or at least with their knowledge. You will find that it will be a pretty big jump in "Practicality". Consider:

• Iran-Contra Scandal - some lonely guys from the go' ol' US of A sold some guns to some bad apples... and some good ones.
• Water Gate is where some president hires a few thugs and sends me on a break in so they can see how bad the other guy's speech is. They get caught and president resigns.
  
• Monica Lewinsky is the biggest in the 90s - no comment.
  

Killing 3000 people with planes in 2001? I don't think this is a practical progression for our president/government's abilities.

Who hit us? Bin Laden? I think so. Is he working for the Americans I doubt it for practical reasons once again. Like, an US Soldier sees Bin Laden, he don't call Bush... he calls the commander, 'Should I kill him?', Bush never finds out. If Bush however tells them not to shoot Bin Laden on site, they loose 25-50 million dollars. I mean come on!!! You think the guy won't pop him over the command of Bush? And even if they listen to him. Why would they not talk? The girl with the doggies in Abu Gharib did. Sheesh, and she got more than 15 seconds. Come on people, why you expect complicated from simple people?