”For example, there might be a Good/Evil zero sum rule. So every demon that enters the world allows an angel to enter to balance him. Which btw explains why the forces of good are so reluctant to intervene directly, they don’t want to allow a corosponding number of demons to intervene elsewhere. Or more interestingly it might be sort of the opposite of the planescape assumption. That is to say the prescence of supernatural evil in the mortal world might balance out by moving the whole mortal plane that much closer to goodness.“ — - Andor on EN World

Freaking Genius