lingdee, again, you're off the mark. These are not pay to fly. These are cadetships/traineeships, there is a difference. You need to pass many various tests to get through, there is a screening process. Pay to fly there is no screening process, just the size of your wallet. Long story short, the people accepted into these programs (while maybe not the perfect candidate and not necessarily amazing pilots) are at the very least less of a risk to the company than a pay to fly pilot with no screening process and nothing to prove their worth or ability.
Know the difference. It will save you a lot of unnecessary posts here.
