Actually, I am thinking. I also have life experience. I have heard this claim all my life and have seen no evidence of a problem. Not one single person coming to grief from fluoride ingestion. It is a fact that "the dose makes the poison." No idiocy in referring to this firmly established principle. No one talks about fluorine levels in the blood, or when it becomes unhealthy. I find that fact indicative of a lack of "story." We are commonly told not to consume "excess" salt (sodium chloride), but does anyone pay attention? (I don't, by preference.) This seems to be the greatest public health hazard that does not show up anywhere except in baleful warnings. So, I'm questioning the received mythology of the past 60-or-so years. You don't like questions? I should just accept the mythology and shut up?