Surveys have shown more than half of Americans believe 911 conspiracies of some sort, especially related to government cover up; don't know how that compares to what other countries believe about it. Though surveys also show 40 percent of Americans believe the government is concealing information about aliens, not to mention a number of other things. The US is a conspiratorial society distrusting of the government. This has all been hashed and rehashed for two decades, and at this point it probably doesn't matter. History can be rewritten but time can't be turned back. Any speculation good or bad about what the government does, has done or will do, only serves as a tool for both the republican and democrat leaders to remind Americans they need security more than freedom. Speculation makes people both dumber and wiser; there's likely very few who actually know which of those they are.