Consider for a moment the case of El Al. More terrorists want to hijack / bomb El Al than all other airlines combined, yet they haven't succeeded. Why?

Because El Al has the political will to do security properly. I am not going to go into the details of the El Al security model here, because 95% of it is unseen, and should remain that way.

But bear in mind it is possible to approach full security with passengers checking in less than 2 hours prior to the flight, and only a small percentage (under 10%) of pax having their bags hand searched.

They do not outlaw razors or plastic knives. On board they have metal silverwear and corkscrews.

Yes, they do a lot of other things, but they do them without passenger inconvenience.

It is possible.