The Spiders Can Stop Half Way Through a Jump

Spiders can spin a really quick line of silk and then use that as a drag line to create air resistance. So they can just stop half way through jumping if they decide it's a bad idea. I read about the dancing and how it evolved because, likeanna says, you don't start the end with evolution. And in this article they said that basically, you do your dance as a spider, and the female is generally not interested. That's why the dances are so long and complicated. Because over the millions and millions of years, they've been improving their dance moves. But do they get et better and better? Do they do the history of all the dance a move st