Needling a Closed Case

I believe that that some conspiracy theories are probably based on facts.  Maybe there was a cover-up of aliens at Area 51.  Maybe owners of fast-food – no, I’m sorry, quick-service restaurants – are putting additives in the grub that make us crave more fat and sugar.  But I know this:  terrorists brought down the twin towers in New York City.  Flouride in the water strengthens tooth enamel.  And vaccinations prevent a whole host of diseases that used to be fatal.   …