did you even read his explanation? air resistance != lift
It's like the blind leading the blind in this thread. (Yes, I know 2009, but still. It's still idiotic)
EVERY wing generates 'lift'. In fact, even a barn door generates lift. However, this only occurs when the wing is at the correct angle of attack. Air doesn't magically go faster over the top than the bottom. That's the age-old easy and pretty much incorrect answer.
A wing is curved on top not to generate lift, but to prevent turbulence. Because of the angle of attack, air coming in toward the bottom of the wing is deflected downward. The effect of the mass of the air striking the underside of the wing creates a force with an upward vector. The same way air hitting the spoiler on the rear of a race car creates downward force. It's also the reason wings have camber.
At the same time, the the air just above the top edge of the wing tries to move straight past the wing. This creates a low pressure zone extending along the length of the wing. This gives the air a velocity vector downward, because it needs to fill the vacuum. Combining the horizontal vector of the air velocity with its new downward vector results in an 'increase' in speed. However, the old pictures of a wing that is completely horizontal and has arrows over the top suggesting the air magically accelerates is a farce.
A wing without the angle of attack will not work very well at all. Without the curve on the top of the wing, the turbulence will cause a stall.
Seriously. Get educated, and 3 of you. Grow up. This is highly technical, not 'guess and hope you get it right'.