The question seems simple, but go ahead and try to answer it. People are quite good at expressing what they believe, and much less skilled at articulating why they believe it. Although we cry out for fact-checking the media, the president and other information sources, we rarely stop to fact-check ourselves. When was the last time you vetted your own beliefs and brought a critical eye to the logic that supports them? In this polarized time, the expression of unvetted beliefs is a major cause of our irreconcilable division.