Cognitive biases are tendencies that shift our opinion or shift our judgment. They distort our perception a little bit and they can make it harder for us to make good decisions. If you understand them, you could understand that someone that you're dealing with is also perceiving things through these cognitive biases. I found a cool list of these things on a website called the visual capitalist.com. And what's interesting about them? It's, have you ever seen the movie? Echo Charles, the Sixth Sense.