[krisoft]

> Perhaps your perspective is distorted by survivorship bias

Have you considered that perhaps it is your viewpoint who is suffering from survivorship bias? For a civilisation to be considered “great” many many things has to go just right. A wide variety of things can and do go wrong to curtail human societies. Prolonged bad weather can ruin the harvest, and the resulting unrest break up the “civilisation”. Random sparks of religuous fervour can catch and destabilise the region. The ruling class can be wrecked by succession wars. Outside threats can conquer all of them. Their civilisation can fail due to economic or demographic changes.

Is it possible that when you are asking how they succeed on such a large scale while others did not you are just observing that they were lucky in many aspects until one day they were no longer lucky? And then wondering what their secret of success was is indeed just survivorship bias.

Obviously it is still an interesting question to study how did they operate, how did they live and so on and so on. But searching for their “secret sauce” might be a fools errand. Because they very possibly didn’t had one.