Efforts to promote equitable public policy with algorithms appear to be fundamentally constrained by the “impossibility of fairness” (an incompatibility between mathematical definitions of fairness). This technical limitation raises a central question about algorithmic fairness: How can computer scientists and policymakers support equitable policy reforms with algorithms? In this article, I argue that promoting justice with algorithms requires reforming the methodology of algorithmic fairness. First, I diagnose the problems of the current methodology for algorithmic fairness, which I call “formal algorithmic (...) fairness.” Because formal algorithmic fairness restricts analysis to isolated decision-making procedures, it leads to the impossibility of fairness and to models that exacerbate oppression despite appearing “fair.” Second, I draw on theories of substantive equality from law and philosophy to propose an alternative methodology, which I call “substantive algorithmic fairness.” Because substantive algorithmic fairness takes a more expansive scope of analysis, it enables an escape from the impossibility of fairness and provides a rigorous guide for alleviating injustice with algorithms. In sum, substantive algorithmic fairness presents a new direction for algorithmic fairness: away from formal mathematical models of “fair” decision-making and toward substantive evaluations of whether and how algorithms can promote justice in practice. (shrink)

This paper argues that there is ethical and practical necessity for including women's needs, perspectives, and expertise in international climate change negotiations. I show that climate change contributes to women's hardships because of the conjunction of the feminization of poverty and environmental degradation caused by climate change. I then provide data I collected in Ghana to demonstrate effects of extreme weather events on women subsistence farmers and argue that women have knowledge to contribute to adaptation efforts. The final section surveys (...) the international climate debate, assesses explanations for its gender blindness, and summarizes the progress on gender that was made at Copenhagen and Cancun in order to document and provoke movement toward climate justice for women. (shrink)