This document discusses nudging and choice architecture in clinical decision making. It describes how small changes to the decision context can influence behaviors and outcomes without limiting freedom of choice. For example, changing the layout of a cafeteria can increase or decrease consumption of certain foods by up to 25%. The document also discusses dual process theory of cognition and how unconscious thinking handles much more information per second than conscious thinking. Choice architects like doctors must describe alternative treatments to patients while organizing the decision context, as there is no truly neutral design.