Joe Alcock and Coffee Brown have a discussion about evolution, medical decision making, and cognitive biases. We focus on a few major cognitive biases - achor bias, attribution bias, immediacy bias, halo effect, among others. We consider how our cognitive and sensory apparatus evolved in ways that can lead us to make mistakes. We explore the idea that the smoke detector principle can affect doctors' behavior and make ER docs more risk averse. How can we make better decisions with these cognitive pitfalls?