Sarumans see something that many people miss: that with the right charisma and shamelessness, social reality is surprisingly, near-infinitely malleable.

Sarumans who have only fought static forces of nature, like the law of gravity, will conclude that as long as you understand a few basic laws, physical reality will become unimportant and only social reality will remain.

But that's wrong.

Because physical reality also has a complex adaptive character, and it doesn't care a single iota about your social reality.

Phenomena like the economy where each individual makes highly local and self-optimizing decisions that add up to massive tidal waves, will knock the Saruman back down, hard.