Originally Posted by
old,not bold
Yes, well, it's arguable that if the answer is "none", that's because potential terrorists know that they will be required to submit to a very revealing security scan of themselves and their hand baggage. If the regime is relaxed to the point where this no longer happens to EVERY passenger, this might be seen as an opportunity to try to get a weapon of some sort on to an aircraft.
Yes, it's not rocket science - if the chances of being detected are known to be approaching 100%, then the likelihood of anyone expecting to be able to get through with a bomb will be effectively zero.