Seemingly, some are saying that it's not the faster airflow over the upper side of the wing (Bernoulli) that's creating the lift, but rather the lower surface pushing the air down.
If so, wings wouldn't need to be shaped as they are, they could simply be constructed as a flat plate !
Non believers of Bernoulli, do this: Go outside into a 15 - 20kt wind with an umbrella. You'd think it'd be pushed down, but feel how much lift it generates !