a different perspective
Here's another view of Gould. I've read Goulds works and found him, like Sagan, to be strongly biased by an overriding political view. Gould much more so in fact. In his last decade, Gould has been viewed as anti-science by many younger generation evolutionary scientists. Many of his noted hypothethes (e.g. those related to punctuated equilibrium) are untestable and somewhat unscientific from that perspective.
-p