In this book I’ll talk about QALYs quite a lot. That’s not because I think the only way to make a difference is to improve someone’s health. Rather, it’s because, as I’ll explain in the coming chapters, many of the best, most concrete and easy-to-measure ways of doing good involve improving global health. We’ve also got much better data for health programmes than for many other sorts of activity. Since the goal of effective altruism is to do the most good we can, health is a good place to start.
