This document discusses various cognitive biases that affect how people receive and understand information. It explores confirmation bias, which is the tendency to interpret new evidence as confirmation of one's existing beliefs. It also examines complementarity bias, which is the tendency for people to be more open to ideas from those who treat them with respect rather than disdain. Additionally, it addresses contact bias and how lack of contact with those different than us can reinforce prejudices and false assumptions about others. The document advocates for developing humility and understanding different perspectives to overcome these natural biases.