The whole point of the expensive cameras and door lock system is to avoid and mitigate the system you highlight. If these systems fail we go back to your system. This would be at the heart of why going back to your system for all is not likely acceptable - it makes clear that we up front cannot be trusted, and that undermines much of our industry's safety foundation.
Not saying of course it will not happen as a kneejerk response.
NigelOnDraft none of your response really made any sense to me at all. Sorry.
Why would you want to mitigate having TWO PEOPLE ON THE FLIGHT DECK AT ALL TIMES DURING FLIGHT?! A very sensible and effective procedure. Checks and balances. Nothing 'Kneejerk'. We do it already. My understanding is that FAA regulations already require it for American carriers. I doubt it would lead to the world thinking we 'cannot be trusted'.