Whatever else they may be, truth and reality are stories we tell ourselves. Our senses diminish the universe but it is still overwhelming. Luckily, we have built-in cognitive biases that shape reality into coherent narratives that provide meaning. Unluckily, they also impede objectivity. Confirmation bias, for example, filters our senses by saving bits of information that support a trusted proposition and ignoring bits that don’t. Evidence supporting our beliefs piles up in our minds and opposing points of view come to seem malicious or moronic or, if we’re feeling generous, mistaken.