Yeah not sure myself if it depends on the person or how much experience they have had on how they manage levels of stress in a inflight emergency.I think that would be a tricky one to figure out but bottom line is that the person himself/herself has alot to do how the emergency will be carried out on the day when it happens for real not just how well they know the emergency proceedure although I do agree it will help alot if they know their aircraft and the drill Zapp..