Which, of course, begs the question what is the proper amount. Should the company have 2x the number of required pilots so that just in case everyone scheduled to work gets sick they can still run with all the others? Or is the margin 50% or 25% or some other number? Just like they have historical numbers of MX issues on aircraft and can figure out roughly what it takes to run a reliable operation over time they also have models which can help with the numbers for crew. Those hold up fine, even with folks getting sick. But at some point when statistical anomalies occur the models break down. And then it becomes a question of whether it is, in fact, just an anomaly or whether there are shenanigans at play. Like I said at the very beginning of the thread, I'd like to think that neither side really is playing that sort of game, but it is hard to know what is really happening and no matter what the actual cause, the customers are the ones who are going to get screwed.