Precipice.
There are licenses available for those who wish the climb the mountains.
Burroughs reveals the secrets of the Mayan control calendar but a failure of paranoia blinds him to how the same system has been elaborated on, refined and continued into the present day.
Weather management is perhaps the Rulers most potent tool of control.
The invention and management of the 4 seasons allowed the Rulers to keep individuals in tune with the other members of their society, synchronising their emotional and physical states.
The point being, manage input to control output.
The parameters of the human mind are finite. This was a conscious decision, made to ensure behaviour remains predictable and controllable.