The rules we have set down here are not mere theories or guesswork. They work like magic. Incredible as it sounds, I have seen the application of these principles literally revolutionize the lives of many people.
So we have to do a lot of guesswork and a lot of really trying to be intelligent with our patrolling and to make sure that we're sending people to the right places.
From this point forth, we shall be leaving the firm foundation of fact and journeying together through the murky marshes of memory into thickets of wildest guesswork.