The power of Scientism's pronouncements is greatly enhanced by the fact that its rituals and observances are powered by technology and science, and therefore its clergy can reliably produce "miracles" on demand: the "Holy Food" is actually medicine, so it really does cure the sick; the throne of the King of Anacreon is really a flying machine, so he can truly levitate over his subjects with a glowing aura. So deep is the indoctrination of the priesthood that they continue to believe in the miracles, even as they themselves work the technology to make them happen. Most significantly, Scientism can follow through on its threats when the people offend the Galactic Spirit, casting the navy adrift and shutting down the entire planet except for the temples, with a word from a priest.