Oil system myths

Correct. But does the wing create the pressure differential? Or does the resulting change in air speed (flow) across the two differently shaped surfaces create the pressure differential? That’s the rediculous argument that is being had.

That is stupid. It's the wing. If it was not shaped like it is so that air didn't speed up as it flows across the top, there would be no low pressure area. A straight wing would not make this happen. At any rate, that argument is almost splittin hairs.