[IshKebab]

Sure but it creates a pressure differential by pushing the air down (in most wings). Pressure differentials are an unnecessarily detailed description of what is going on that just confuses people.

You wouldn't explain how swimming works with pressure differentials. You'd just say "you push water backwards and that makes you go fowards". If you start talking about pressure differentials... maybe you're technically correct, but it's a confusing and unnecessarily complex explanation that doesn't give the correct intuitive idea of what is happening.

[rcxdude]

Sure. If you're going for a basic 'how does it work', then 'pushing air down' is a good starting point, but you'll really struggle with follow-up questions like 'then why are they that shape?' unless you're willing to go into a bit more detail.

[IshKebab]

Well, yeah of course you go into more detail if they ask more detailed questions.