Min. of two on flight deck.
If I had a pound or dollar for every mention of "knee-jerk" in this context I'd be much better-off.I truly believe that this reaction is not so.The argument has been most probably finely balanced and this event was the tipping-point in Europe.
When the .38/45 and mega-Joule-proof doors came in,it fell to the lot of some of us to come up with a satisfactory procedure.The reason some airlines went for a minimum of two might have been the same as mine:I could not accept the idea of one pilot,on their own,behind something notionally impenetrable.I was coming from the standpoint of overall safety for all on board by having another pair of hands and eyes available-no algorithms,no statistics.Cabin crew are well trained and resourcful.