Predictably, the child dies. This principle won't do, because it implies that Singer has done nothing wrong in The Crowded Pond. At the center of the park is a shallow pond. In the center of the pond, there are hundreds of drowning children and an unstoppable sadists is constantly throwing more children into the pond. Singer could save some of the children, but it is impossible to save them all.
Singer decides to save none.
Predictably, they all drown. One is required to give aid to needy strangers if and only if that aid can be causally focussed on one particular individual rather than spread out amongst many individuals. This principle won't do, because it implies that you acted wrongly in The Envelope II, but also because it implies that Singer has done nothing wrong in The Rubber Rafts. A boat full of school children has just capsized. As a result, hundreds of children are drowning.