<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Doppy:
2. Average one minute delay per flight assumes that not every flight has no shows. How many people really check in for a flight, check baggage and then decide to leave the airport and go home, without their checked luggage? </font>
I doubt that people deciding to go home is responsible for most PPBM events. The most likely scenario is that the customer simply loses track of time (they're in the restroom, in the bar having "one for the road" or are involved in watching a ball game on TV, working on their laptop, reading, etc.). Or, their watch is slow. Or, they mistake the departure time with the boarding time. Or, they catch an earlier flight. Or, they get lost in the airport. And so on.