Or -Ollie - differences in pressure is the name of the game -right?
I agree with your explanation -of course but - I find that it is - for the layman - information which does not link easily to "common knowledge."
How airfoils work -in small models is typically pi-- poor. Most may as well be simple small stiff slabs of whatever.
We are a hell of a lot closer to the bumble bee approach- .
(I liked that explanation - even a child can grasp that easily)