There is a computer disease that anybody who works with computers knows about. It's a very serious disease and it interferes completely with the work. The trouble with computers is that you 'play' with them!
If the September 11 terror attack is supposed to constitute a caesura in world history, it must be able to stand comparison to other events of world historical impact.
Constructive criticism is about finding something good and positive to soften the blow to the real critique of what really went on.