In reply to Ian Parsons:
> I don't think that highlighting the weakness in their argument is necessarily a good move! And let's face it; they have a job to do, and if they screw up the world will probably land on them "bigtime".
You're probably right that there's nothing gained by saying anything at all (except perhaps the occasional, highly respectful yes Sir/Madam). But I was annoyed because any fool could tell that I was a climber, not a terrorist. Yes they have a job to do, but it doesn't necessarily follow that they're doing it in the best way.
I think they should emphasise the detection of criminal mentality far more, and spend less effort slavishly applying rules about items in hand luggage. In other words use more common sense. If they really considered it a risk that I might tie up the cabin staff with my rope, what about the risk that I'd stab them all in the eye with one of my pens? Far quicker and more effective than the rope, but it didn't occur to them to take my pens away.