@Owain Glyndwr, FlightPathOBN,
I don't have much time now, but immediately Thank you for your contribution.
I liked that pictures only to show turbulence, and to help to forget the post #1 shematic... But yes it is just in a wind tunnel, and Iself often am saying it is a dangerous limitation to explain lift, how aircrafts fly, aso.
Originally Posted by @Mr Optimistic
This all started with a 23yr old OP who stated 'Pardon me, this isn't a very technical ques.'
Sorry, Lyman !