This is dangerously close to an appeal to authority. Yes, Pierre Sprey has more experience, insight, and knowledge than I do when it comes to aircraft design. B

This is dangerously close to an appeal to authority. Yes, Pierre Sprey has more experience, insight, and knowledge than I do when it comes to aircraft design. But you also have to judge him on when he's been wrong (ie the F-15), and to also realize that he has zero inside knowledge of the F-35.