It was your proposition that it would not prevent these incidents, based on circadian rhythms. But it is an interesting question as to whether mandatory crew rest periods are based on circadian rhythms rather than set time periods. I know for many crews at many airlines they don’t have the luxury of layovers based on circadian rhythms. Not sure if BA is different. I agree it’s not ideal that crews have to sleep in the allocated time, even if they might not be tired. But that’s the way the industry is.