A book decides. A plan was written a very long time ago and there is a group of people that work to ensure things go as they were planned to go.

These people are fanatics. These people are very wrong in what they are doing. The vast majority of these people don't even know they are working to bring about the plan.

A long time ago an idea was planted and it took hold. The idea is so strong in the minds of some people, they will kill children and old people to bring about that plan. The idea, while not as strong in other people, still has a great effect on the world.