how airplanes fly.

[robby]

@DesertDog

The Bernoulli hyothesis sounded like BS to me when I learned it in my teens. Sure, the faster moving air reduces pressure to cause lift; you can prove that by blowing air through a straw held over a piece of paper. The question I had was why the air is moving over the top of a wing faster just because it has a longer path – were the molecules that got split having conversation and the one on top wanted to continue it?

I always took this to be a manifestation of the continuity principle. See here for more detail. If the molecules that take the longer path didn’t catch up to those that took the shorter path, you’d end up with a mass imbalance.