What you believe to be true and false can (and probably ought) be based on what you&#x27;ve observed, experienced and researched. Beliefs must be periodically challenged or they&#x27;re merely blind faith. And that way lies madness.<p>This means your beliefs ought to be malleable. And when they don&#x27;t change after evaluation you ought to have a reason for it. Even if it&#x27;s just: No new evidence, evaluate later.