The ones that get me are the ones where we're strictly not allowed to do something yet it seems that if it was actually dangerous terrorists would be doing it.

The ones that get me are the ones where we're strictly not allowed to do something yet it seems that if it was actually dangerous terrorists would be doing it. The most oft-talked about example being using a phone on a flight, another being a flame in a petrol station - if that was dangerous, surely terrorists could target 10s of them with no preparation other than recruitment?