"You're next to a body of water with plenty of adults nearby. There are many drowning children in the water, but it's still much less than the number of people who can immediately save them.

Collectively, if a fraction of the people went in the water, there would be no children drowning, but one individual can only save a few kids at best. If everyone jumped in the water, that would be a waste of time and resources better spent elsewhere.

Some people save the children, but most people do nothing. What should be done?"