This is a slightly modified version of a recent post I made on my blog  http://ianmillerblog.wordpress.com .  I am changing it only to add to the chemistry. In a post two weeks ago I raised the issue of "settled science". The concept was there had to be things you were not persistently checking. Obviously, you do not want everyone wasting time rechecking the melting point of benzoic acid, but fundamental theory is different. Who settles that, and how? What is sufficient to ...