Pinker,
Blank Slate references GGS. I'm also reading a collection of essays by Barbara Kingsolver, and GGS is at the top of her "suggested reading" list. After
Blank Slate I only have four more books to go. . . wait, make that three, since one is fiction. I guess Diamond has to be worked in pretty soon!
I recall someone on the list is reading
Steel for a class. Even though the official discussion is over, I'd be up for delving back into it with any who are interested.