Alternatively, Al-Qaeda sees the increased security, and doesn't attack on 9/11, and so attacks on some other day. Maybe they guy luckier this time around, and all the planes reach their targets.briankoontz said:But then something interesting happens. Let's say that based on the "prediction" of 9/11 that 9/11 is prevented. Because it's prevented the revenge excuse the Bush Administration used to invade Afghanistan and Iraq is gone, and if the excuse was what allowed that reality to occur then maybe the invasion of Iraq and Afghanistan never would have happened, or at least would have happened differently to how they did. Because the invasions never happen all reality *connected to* the invasions never happens - in other words the entire course of history is changed, triggered by the prediction of 9/11.
The problem with stuff like 911, is that people don't really see the problem until it's happened. You had procedures to be put in place if that sort of thing happened, only it didn't click that this was what was going on.
Crashing airplanes into buildings sounds like a problem in theory, but didn't seem like a real threat people really had to react to, so the preventative measures failed.