[lordnacho]

Ok so let's see if HN can put something together:

- The wing deflects the air down, so that's one way of creating lift, but most wings are not just flat

- An airplane can fly upside down

- It's a bad idea to take off behind another plane

- Modern wingtips have special shapes that makes them more efficient

- Answer has something to do with vorticity, but what exactly?

Hopefully we can get something better than whatever AI uses to explain these. I haven't asked it yet, but I get the feeling it would produce something plausible sounding that I won't be able to easily refute, ie it would trick me into thinking I understood it.