My son hides two cars behind his back. “Mama, pick one hand” – he says. I pick one. He shakes his head and says, “No, that one’s mine. Pick again.” I pick again. And again: “No mama, that one’s mine. Pick the other hand!”

I do.

The problem of pain is intricately intertwined with the problem of choice. Once the latter is understood, the former ceases to be a problem.