### From the availability heuristic to Cayley’s Theorem in 74 steps

Via Daring Fireball, the other day I came across this review of *The Black Swan*, where one of the commenters linked to the Wikipedia article on the availability heuristic. A couple of hours later, when I came up for air, I’d somehow ended up reading about the Yoneda lemma and Cayley’s Theorem. Here’s a visual representation of how I got from one to the other:

Click the image for the full size version, in which all the nodes are linked to the corresponding Wikipedia article. The same is true of the PDF version. The order in which I read roughly corresponds to the vertical position.

I also rather like this alternative view, with corresponding PDF version.

Incidentally, if you enjoy this sort of thing and you use a Mac, you might like Pathway.