For me it's a very simple question. Which is more likely: Did our government intentionally slaughter almost 3000(with a potential for many more) of its own citizens just to start a war? Or, did a group of eternally pissed-off radical muslims(that take credit for it) do it? I'm going with the confessed pissed-off muslims. And,yes, objects fall at 32 fps squared or a little less depending on aerodynamic drag.