I’ve always found Sam Harris’s output to be uneven in quality, but I think he’s usually worth reading. While reading the email exchange between him and Glenn Greenwald, I wasn’t sure whose take I found more convincing. However, Greenwald’s longer summary of the argument seems pretty reasonable to me; I think I have to side with him.

On a related note, I just got hold of a used copy of Harris’s book The Moral Landscape, so maybe that will shed a little more light on what I find questionable about his thinking.