More at www.philosophytalk.org/shows/cognitive-bias.Aristotle thought that rationality was the faculty that distinguished humans from other animals. However, psychological research shows that our judgments are plagued by systematic, irrational, unconscious errors known as ‘cognitive biases.’ In light of this research, can we really be confident in the superiority of human rationality? How much should we trust our own judgments when we are aware of our susceptibility to bias and error? And does our awareness of these biases obligate us to counter them? John and Ken shed their biases with Brian Nosek from the University of Virginia, co-Founder and Executive Director of the Center for Open Science.