Why the Precautionary Principle always works

Has anyone else noticed that since the eruption of the Ejyerkslllbjorkscreeylllkkrctarslyllgrgleglugglug volcano not a single plane over Europe has crashed, been involved in a terrorist incident or caused any of passengers on board an aircraft any discomfort whatsoever?

I feel a Big Idea coming on. It's a Big Idea right up there with David Cameron's new Big Idea to corral all Britain's old people into repainting youth centres, clearing up needles on drug estates, setting up new Green Job...