Great video. This is one of those phenomena, like how to fix traffic jams, that everyone has an opinion on because of firsthand experience, but few people know about the actual research on. Despite there being known fast methods, I think 2 things stand in the way of implementing them:
1) Business and 1st class make a lot of money for airlines. Not letting them board first (although personally I've always wondered why this is desirable) would devalue their tickets and make less profit for the airline.
2) Airplanes have to undergo certain maintenance checks or procedures whenever they land. Those take some fixed amount of time. There is no incentive to speed up the boarding/deplaning process past that fixed amount of time, since it won't be the limiting factor.
1) Business and 1st class make a lot of money for airlines. Not letting them board first (although personally I've always wondered why this is desirable) would devalue their tickets and make less profit for the airline.
2) Airplanes have to undergo certain maintenance checks or procedures whenever they land. Those take some fixed amount of time. There is no incentive to speed up the boarding/deplaning process past that fixed amount of time, since it won't be the limiting factor.