It's interesting how policies like fluoridation of water are accepted at face value assuming the highest of scientific / statistical rigor was used to justify them. Of course that is not the case. Yet it requires just that, not common sense, to even question the practice in a manner that people will not consider somehow off-kilter. Our faith in authorities is stronger than ever, while the scientific community struggles with our basic ability to reproduce much of the research we even today cite is rigorous even ground-breaking.