[Pontiac]

It was also astonishingly advanced: sophisticated and complex, boasting large, carefully laid out cities, a relatively affluent population, writing, plumbing and baths, wide trade connections, and even standardized weights and measures.

Sorry you don’t have complexity without planning.

You don’t planning without a planner.

A planner is is a leader. A leader is by definition is part of a hierarchy.

Find their god/gods and you will find their hierarchy.

Their religion will be the source of the lack of temples and palaces.

I suspect that the lack of temples and statues in their cities is due to laws like the Jewish religion’s prohibition of graven images.

[marktwain]

Sorry you don’t have complexity without planning.

Sure can have complexity without a central planner.

What is needed are a few simple rules people know to follow.

Essentially, things like the rule of law and property rights.

Planning does not require a single ruler or a tiny ruling class.