For one thing, I read GEB and found it difficult to follow. No doubt there is more in GEB than in this article, but without this less lengthy summary I couldn't

For one thing, I read GEB and found it difficult to follow. No doubt there is more in GEB than in this article, but without this less lengthy summary I couldn't get at it, life and attention being what they are. If I returned to the book now, I bet I'd understand more of what was already in it.