> Just kidding about Bernoulli...

But you are right! - I'm told that there are lots of incorrect explanations of the slot for example that invoke Bernoulli and that Arvel Gentry is the myth buster...

http://www.arvelgentry.com/techs/A%20Review%20of%20Modern%20Sail%20Theory.pdf

And an interesting thread on the same:-

http://www.boatdesign.net/forums/showthread.php?t=457&highlight=sailwave