&gt; <i>There was a good article yesterday about Antoine Lavoisier, the father of modern chemistry, who was killed unnecessarily during the French Revolution (but not during the dark ages). Someone said it most probably set back chemistry 20 to 50 years. It happened, often. Or Galileo and his rotation of the planets.</i><p>Worth noting that Galileo also lived hundreds of years after basically any definition of the &quot;Dark Ages&quot;.<p>Wikipedia has a nice turn of phrase calling the term a caricature of the period. There are aspects to it that were true, but overall misleading to inaccurate (the Islamic world certainly was in a Golden Age at the time, however).