Art of Deception

In the "Art of Deception" Arnie Lerma states:

Hubbard constantly directs members attention to his own false claims of being able to create the exalted states of clear and OT, with intent, thumping his own chest about his greatness so loudly that none might hear anyone question him..

The concept of inducing your theory into the minds of people by forbidding any questioning seems to be another core technique of a cult.