Abstract

Effective altruism is the project of using resources like time and money to help others as much as possible. Those who engage in this project—effective altruists—tend to focus on three ways of helping.First, effective altruists focus on helping people living in extreme poverty and typically support interventions that prevent diseases such as malaria, trachoma, and schistosomiasis. These interventions have been shown to be highly cost-effective. For example, it costs on average about $4,500 to prevent someone from dying of malaria.Second, effective altruists focus on reducing animal suffering. For example, tens of billions of animals are raised each year on factory farms. The conditions on these farms are so poor that the animals’ lives are probably not worth living. A host of charities aim to improve conditions on these farms or reduce the number of animals raised on them.Finally, effective altruists focus on improving the long-term future. This often takes the form of safeguarding the very existence of humanity's future by reducing risks of existential catastrophe posed by threats like nuclear weapons, pandemics, and artificial intelligence. It is frequently argued that, since there is vast value in avoiding such catastrophes, reducing the risk of any of them even fractionally has relatively high expected value.Each of these three ways of helping has been argued to be the most cost-effective way to help, that is, what makes the biggest positive difference, per dollar donated (or hour of time volunteered). There is disagreement among effective altruists over which of these areas, if any, should be the top priority.The effective altruism social movement has been around since about 2011 and now has thousands of supporters and is backed by billions of dollars in donations. At the same time, the project, underlying philosophy, and social movement of effective altruism have attracted substantial criticism, voiced in very visible venues. The present special issue of PAQ deals with a range of philosophical issues at the heart of this ongoing public debate. Below is a very brief overview of the articles in this issue.In “Why Not Effective Altruism?” Richard Yetter Chappell takes a careful look at criticisms that have been offered against effective altruism. He focuses on four ideas associated with effective altruism that have received particular attention, including moral prioritization, earning to give, billionaire philanthropy, and longtermism. Chappell argues that, in each case, the core moral claims of effective altruism cannot reasonably be rejected.In “Effective Altruists Need Not Be Pronatalist Longtermists,” Tina Rulli offers a sustained rebuttal to the argument for longtermism presented by William MacAskill in his recent book What We Owe the Future. In particular, she objects to pronatalist longtermism, which favors extensively populating the future, provided the future will be on balance good. Rulli argues that taking account of moral considerations most would recognize shows this position to be implausible. Her view is nonetheless compatible with versions of longtermism that focus on preventing harms to future people.In “How (Not) to Fear Death,” Susanne Burri provides a fresh perspective on the ancient question of whether we should fear death. She argues that, on a wide range of theories of well-being, it can be fitting to fear death. Burri argues that having a proper philosophical understanding of our reasons to fear death is in fact essential to reducing our death-related fears. This, she argues, provides an example of philosophical therapy, a neglected type of intervention effective altruists should consider. Given that the dissemination of valuable philosophical insight is so cheap, and could significantly benefit so many, it can and should be pursued alongside more resource-intensive interventions such as distributing malaria nets or reducing existential risks.In “Effective Altruism and Requiring Reasons to Help Others,” Thomas Sinclair provides a response to one of the main claims of my recent (2023) book The Rules of Rescue. I claim that each of us has a requiring reason (or pro tanto duty) to prevent harm to others, whenever we have the opportunity to do so. I argue that since these opportunities are ubiquitous, so, too, are requiring reasons. In response, Sinclair argues that we have requiring reasons to help others only when we engage with the plights of these others in a certain way. That engagement is not ubiquitous; it is present in cases of nearby emergency rescues, but it is not present simply whenever we can donate to effective charities.Philosophical debates surrounding effective altruism have developed rapidly over the past decade or so. As the articles in this special issue suggest, there is still much to be explored.