Bravo Hal, simplistic yet quite convincing. Now, do the air molecules that got separated at the leading edge and flowed OVER the wing meet the molecules that travelled UNDER under the wing, at the trailing edge?

Why should they?

My question for RCaillouet3 was "did you learn that in highschool or is this something you learned in Aerospace Engineering School"? Because I understand the concept is wrong, and I would like to know if this is what erospace Engineering students are taught. There is no law of physics that says that MUST happen. I certainly MAY happen but it doesn't HAVE to. And if it DOESN'T HAVE TO happen, we cannot use that explanation as to why a wing creates lift, you follow me?

Yes, this is very interesting

Luis