"widely known" is useless in science. Anyone can claim that they know something is X, i.e. pretty much every one of Trump's statements is him claiming that "I k

"widely known" is useless in science. Anyone can claim that they know something is X, i.e. pretty much every one of Trump's statements is him claiming that "I know <insert subject> is bad, therefore we must do <insert solution>". His statement isn't any more true than merely stating that he's wrong without anything to prove his falseness. Science and actual studies do make it true that he's wrong.