Boarded a flight the other day and an automatic announcement intoned that as the plane was refuelling, passengers should keep all their electronic devices switched off, seat belts unfastened and blinds up. So I sat there with people around me on their phones, seat-belts on and blinds down. So, I couldn’t help wondering, had the plane ignited and gone up like a Christmas tree, we were all doomed. Just thought I’d share that with you.