Choice architecture is a term that is used to describe the different ways in which choices can be presented to consumers, and the impact of that presentation on consumer decision-making. For example, the number of choices presented,[1] the manner in which attributes are described,[2] and the presence of a “default”[3][4] can all influence consumer choice. As a result, advocates of libertarian paternalism and asymmetric paternalism have endorsed the deliberate design of choice architecture to nudge consumers toward personally and socially desirable behaviors like saving for retirement, choosing healthier foods, or registering as an organ donor. These interventions are often justified by the fact that well-designed choice architectures can compensate for irrational decision-making biases to improve consumer welfare.[5] These techniques have consequently become popular among policymakers, leading to the creation of the UK's Behavioural Insights Team and White House "Nudge Unit" for example.[6] While many behavioral scientists stress that there is no neutral choice architecture and that consumers maintain autonomy and freedom of choice despite manipulations of choice architecture,[7] critics of libertarian paternalism often argue that choice architectures designed to overcome irrational decision biases may impose costs on rational agents, for example by limiting choice