I saw this yesterday and it made me think of the idea that a gardener doesn't tell a flower how to grow, or even to grow, they just provide the environment needed for the flower to flourish.
We humans are biologically evolved to be social creatures. Like a flower doesn't need to be forced to grow, our children don't need to be forced to learn social cues. It is in their biology. They are made to get along with their group, to read people, to empathize, to make amends. We simply need to provide the right environment for them to flourish, then watch the beauty of it all unfold.