I'm sure this ignorance is across the board, and not just vested with those fortunate enough to be selected for the task. As frequent flyers will testify, there seems to be little information about this subject in the service domain, apart from as CC rightly states in public forums. Perhaps a glossy leaflet at the airhead would alleviate the problem? And perhaps a survey to complete en-route to hand in to the PRO? It would be something to do on long flights to the various sh1tholes we seem to visit as well.