the problem. kristin: and so, you know, in addition to the software issues, some members of congress, during this hearing this week, were very critical of the training for the pilots and some of the pilots themselves. in fact, they blamed the pilots, some lawmakers, for the ethiopian and indonesian crashes. do you agree with that line of thinking? >> not really. i think what we always find in an accident it's not usually one event, it's a chain of events. yes, the pilots were there in the airplane trying to wrestle control of the airplane back, you know, but again, they're not here to defend themselves, but again, it's only a piece of the puzzle. we didn't even know that this system that went crazy even existed until after the lion air crash last year. kristin: there were just so many concerns that were brought up in this hearing and i want to share one more of them with you, and then get your take on the other