happen in wartime. That isn't a justification for war for those advances come at a terrible price. It's just a statement of historical reality. Look at the technological developments in WWII alone: jet aircraft, long range rockets, digital computers, radar, antibiotics, nuclear weapons, etc. The widespread production and use of antibiotics alone has save more lives than were lost in the war. That in no way justifies that or any other war, it's just a historical fact.

I wouldn't call the deaths of thousands in the WTC and Pentagon attacks a good thing under any circumstances. However, it's possible that good things will come in the long run from those terrible events. We should resolve that this be so or those lives would've been lost in vain.