Many adults are put off when youngsters pose scientific questions. Children ask why the sun is yellow, or what a dream is, or how deep you can dig a hole, or when is the world’s birthday, or why we have toes. Too many teachers and parents answer with irritation or ridicule, or quickly move on to something else. Why adults should pretend to omniscience before a five-year-old, I can’t for the life of me understand. What’s wrong with admitting that you don’t know? Children soon recognize that somehow this kind of question annoys many adults. A few more experiences like this, and another child has been lost to science. There are many better responses. If we have an idea of the answer, we could try to explain. If we don’t, we could go to the encyclopedia or the library. Or we might say to the child: “I don’t know the answer. Maybe no one knows. Maybe when you grow up, you’ll be the first to find out.

It didn’t matter in the end how old they had been, or that they were girls, but only that we had loved them, and that they hadn’t heard us calling, still do not hear us, up here in the tree house with our thinning hair and soft bellies, calling them out of those rooms where they went to be alone for all time, alone in suicide, which is deeper than death, and where we will never find the pieces to put them back together.

Be brave. Take risks. Nothing can substitute experience.