I have been privileged to be a principal caregiver to a grandchild, now 4-1/2 months old. I am reminded that babies initially cry for what they need, often food. Later, if all goes well, they start to smile and laugh spontaneously, from pure joy, to the delight of those around them. Only much later do children learn that a smile, and other behavior, can be used to manipulate and deceive. Every human child is a new opportunity for humanity not to fuck this up.