Well, I never had much use for the groupmind myself - I've never been popular in part because I've always been more interested in expressing my opinions than in being liked. And for a woman, especially, this is a huge drawback - women don't get to be crusty curmudgeons, our first job is to be agreeable.
In any case, I was pleased to find some vindication in last week's New Yorker article Brainstorming Doesn't Really Work, which is not available in its entirety online alas, just the abstract, which says:
By analyzing 19.9 million peer-reviewed academic papers and 2.1 million patents from the past fifty years, he has shown that levels of teamwork have increased in more than ninety-five per cent of scientific subfields. Discusses the work of Charlan Nemeth, whose studies suggest that the ineffectiveness of brainstorming stems from the very thing that Osborn thought was most important. “Debate and criticism do not inhibit ideas but, rather, stimulate them relative to every other condition,”