I bought his book a few years back after seeing an article (quite possibly this one) about it. I haven't gotten around to reading it in depth, but several time

I bought his book a few years back after seeing an article (quite possibly this one) about it. I haven't gotten around to reading it in depth, but several times I've spent a few hours flipping through it reading bits and pieces. It's fantastic if you have any interest in the subject matter.