You need hands

What would we do without hands? For most of us, very little. From our earliest moments, even before we are born, we use them.
Even in the womb, a baby will start sucking its thumb. The baby is perhaps learning the skills that it will need to feed once it is born. Once the baby is born, it will continue to suck its thumb, but will soon discover that those funny looking things at the ends of its arms are not just good to put in its mouth.