Evil works best, not as a growling beast crouching in the darkness, but in a rational, scientific voice. It is the way it's always worked, the way it worked years ago, the way it works now.
When we think of evil, we think of something violent or demonic, something filled with hatred and wretchedly hungry to devour the good. But what if evil eats a salad at lunch and is polite, speaking rationally with nice table manners?