Quote:
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Originally Posted by Isaac Newton
For every action there is an equal, and opposite reaction.
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According to Newton's Third Law, it is.
If there is to be lift, there is also to be a change above the object being lifted. That change must be equalized below the object, meaning that higher pressure under an object, or lower pressure over an object, will create lift. Lift, in essence, is generated by a change in pressure... that would make pressure equivalent to lift, since they change linearly with each other, they can be transposed.
The above being the concrete case in physics, a force can only be counteracted by an equivalent force of opposing direction. This is to say, again, that lift still occurs at any tangent on the shape, but is opposed by the same gross lift on the opposing tangent, creating a net zero lift situation.