The teaser for Matt Ridley's post in last week's Wall Street Journal sounded great:
Can Genes Explain the Sex Divide?
Matt Ridley explores the thought that some of our sex differences might be caused by our culture as well as our genes.
That's an interesting question, and Ridley seemed the ideal candidate to explore it. He's a good writer, a best-selling author, and a scientist, and he's written about...