Beginning with Santa Claus as a cognitive exercise, a child is encouraged to share the same idea of reality as his peers. Even if that reality is patently invented and ludicrous, belief is encouraged with gifts that support and promote the common cultural lies.
The greatest consensus in modern society is our traffic systems. The way a flood of strangers can interact, sharing a path, almost all of them traveling without incident. It only takes one dissenting driver to create anarchy.
