Jensen And The Two Bell Curves

The  Arthur R. Jensen Telegraph obit [1] Steve Sailer mentioned below [2]features this photo of Jensen  standing in front of blackboard during a lecture atUniversity of California, Berkeley, in 1970. I thought "there's that "Bell Curve" [3] of which we've heard so much [4]. Uh-oh—it's two bell curves."

The one one the right represents a group (call it x) with an average of something (let us say IQ points) of 100. The one one the left represents a group (call it y) with an average of 85.

And that's what's caused all the trouble. If the cover of Charles Murray's book [5] had had two Bell Curves on it, it would have been burned.