More than explicitly written laws and regulations, the true bedrock of a functional society is the countless, unspoken agreements that maintain order and prevent the kind of chaos that a hooded horseman with a collection of human skulls would thrive in. Some are more salient than others; many of us know not to jump into jump into highway traffic without adequate context and to generally refrain from playing with hand grenades in the car

But there are other unwritten rules that help keep the fabric of our society together -- rules which any decent person should know. So write these down, maybe.