Paying too much attention to the individual visible victim rather than to the numbers can lead us to spend all our resources on a fraction of the problem, and therefore save many fewer lives. This principle applies anywhere we are prioritizing scarce resources. It is hard for people to talk about resources when it comes to saving lives, or prolonging or improving them. Doing so is often taken for heartlessness. Yet so long as resources are not infinite—and they never are infinite—it is the most compassionate thing to do to use your brain and work out how to do the most good with what you have.

