"i learned that predators don't intentionally choose the weak or old or sick. they kill what they can, which means the slow members of the pack. thus, they strengthen the very gene pool they're feeding from. the threshold for what is weak, old or sick gets raised, and the strength, speed and instincts of new generations of hunters grow. a beautiful, self-perpetuating system where evolution is the antithesis of entropy."
— Craig Clevenger (The Contortionist's Handbook)