A choice function C is rational iff: if it allows a path through a sequence of decisions with a particular outcome, then that outcome is amongst the ones that C would have chosen from amongst all the possible outcomes of the sequence. This implies, and it is the strongest definition that implies, that anyone who is irrational could be talked out of their own preferences. It also implies weak but non-vacuous constraints on choices over ends. These do not include alpha (...) or beta. (shrink)

This thesis studies some philosophical and ethical issues that economic design raises. Chapter 1 gives an overview of economic design and argues that a crossfertilisation between philosophy and economic design is possible and insightful for both sides. Chapter 2 examines the implications of mechanism design for theories of rationality. I show that non-classical theories, such as constrained maximization and team reasoning, are at odds with the constraint of incentive compatibility. This poses a problem for non-classical theories, which proponents of these (...) theories have not addressed to date. Chapter 3 proposes a general epistemology of economic engineering, which is motivated by a novel case study, viz. the reform of a matching market for medical practitioners. My account makes use of causal graphs to explain how models allow encoding counterfactual information about how market outcomes change if the design of the market changes. The second part of the thesis examines ethical issues. In Chapter 4, I apply tools from matching theory to gain insights into the distribution of refugees, such as among countries of the European Union. There is an ethical trade-off between the fairness of matchings and their efficiency, and I argue that in this context, fairness is the morally weightier criterion. Chapter 5 deals with the ethics of kidney exchange. Against critics, I give two arguments for the implementation of kidney exchange programmes. The first argument is that they are instrumental in meeting a moral obligation, namely to donate effectively. The second is that kidney exchange may increase the motivation for altruistic donations, because the donation of one kidney may trigger > 1 life savings. The final chapter identifies questions for future research and it closes with some thoughts about the future trajectory of economic design. (shrink)

We often encounter people who we believe are behaving immorally. We routinely try to change minds and often donate to charitable organizations that do the same. Of course, this does not always work. In a liberal, rights-based society, we have to tolerate this. But legal entitlements to act in ways that others find immoral are inefficiently allocated. For example, some meat-eaters value eating meat less than some vegetarians would be willing to pay them to stop. While many have written about (...) the limits of the market, market design, and abuse of right, few have considered the sale of these entitlements. This article proposes a market-based solution, encouraging the sale of these entitlements under certain conditions. This would lead to improvements both on an economic efficiency analysis and on a moral analysis. (shrink)