DFA: When NASA says: These velocity variations are caused by the disruption and turning of the air flowing past the wing. They are right on. It is the first time I've seen this in print somewhere and I wish we'd used this line in the book. It neatly sumes up an important part of our book.
CJ: This is hand-waving intended to confuse the reader and the general public and give the impression that NASA understands. If you know a correct answer to a certain question, there is no reason to present three incorrect answers; in fact there are infinitely many wrong answers, but only one correct. NASA does not claim to present a correct theory, unless handwaving is a theory. Do you really mean that to just say that the turning of the flow of air around a wing is what causes lift, is a theory?