The most informative thread on the Internet on this subject is probably this one: http://www.plos.org/cms/node/75 http://www.plos.org/cms/node/75 That's an ex

The most informative thread on the Internet on this subject is probably this one: http://www.plos.org/cms/node/75 http://www.plos.org/cms/node/75 That's an extremely informative, citation dense conversation which took place in the aftermath of the Summers/Barres imbroglio a few years ago.