Do you know anything from experience or just those things which you've been told? To whose 'scientific knowledge' are you referring? Is it the 'scientific knowledge' funded by the industry? Is it the archaic 'knowledge' that gets parroted over and over down through the generations without examination? Is it the 'information' pushed into law by regulatory agencies with incestuous ties to the industry? I gave up believing everything I was told, without examination, when I was a child. It's a shame that so many adults never give it up.