There were some "lap children" on the flight, some of whom died in the crash. So it was proposed that all children be in their own seats on commercial flights. This regulation was in place for less than a decade before being revoked. The reason? Economists estimated that because this would raise the cost of a family flying, it would encourage some to drive instead of flying -- and for every 1 life saved by the regulation, it would cost 60 lives due to the much more dangerous driving.