Fun! DD8 matched novice best score second time. I'm e-mailing her the link so she can have fun with it.
Thanks Val!
You're welcome.
I found a site with some explanation about these ideas; the maths is a little bit advanced, but it's interesting:
iterated function systems.
I worked through this myself without too much trouble; it helps to work out the examples rather than just read them (this time, I'm legitimately doing this to understand the paper I mentioned, but am still on page 1!).
Also, the
Wikipedia has a cool illustration of a Sierpinski triangle and fractals.
Val