If you decide that it’s wrong to allow an infant to starve, but that poisoning a child is wrong, how can you be 100% certain that what you are about to feed it isn’t poison? You can’t know that it’s moral to feed the child what you are about to feed it.

it doesn’t matter. if i don’t believe it’s poison, then feeding it to the child is the right thing to do. done-and-dusted.