[kenneth]

Regular sails actually work similarly to a wing, in that pressure differentials on either side create a force we call lift on a plane, rather than simply being "pushed from the back" by directly catching the wind. That's why a sailboat can go in almost any direction regardless of which direction the wind is blowing.

[lostlogin]

Watching bleeding edge yachts sail is always interesting. Hydrofoils achieve speeds greater than 3x wind speed though their stability doing it is a bit alarming.

https://www.odt.co.nz/sport/yachting/how-fast-can-americas-c...

[usrusr]

The imaginary future where huge cargo ships foil under city-sized kites is more impressive than anything I've seen with spaceships.

[jessriedel]

Edit: sorry, nevermind, I was confused as to what you were claiming.

[kdmytro]

>> A point.

> No. Literally the same point, but in different words and with a feel of authority.

You should consider using words other than "No" if you agree with the point.

[jessriedel]

I misinterpreted his original point, which I intended to disagree with.

[jessaustin]

Reading the parent carefully, I find nothing that contradicts what you have written in response. Pressure is just force over area.

[jessriedel]

Thanks, upon re-reading I agree. I misinterpreted the "pushed from the back" statement.