First of all, we do not rely on the scanners, per se. The only reason we have scanners at Ben Gurion airport is because of ICAO standards.
By the way, we do profile people at the scanner. We do look at the people. We do profile them behaviourally. We don't pay much attention to what they have in their bags unless it is banned by ICAO--guns, knives, and stuff like that. But you can take five bottles of very good Israeli wine back with you to Canada, if you fly directly.