It would be bad enough if empathy were simply silent when faced with problems involving large numbers, but actually it’s worse. It can sway us toward the one over the many. This perverse moral mathematics is part of the reason why governments and individuals care more about a little girl stuck in a well than about events that will affect millions or billions. It is why outrage at the suffering of a few individuals can lead to actions, such as going to war, that have terrible consequences for many more.
