[krisoft]

> I am not wondering how to build rope bridges

You were just a few comments ago. You were specifically asking how bridge construction and maintenance is communicated over great distances and time. Let me quote your very own words to you: “how do you communicate, for example, rope bridge construction and maintenance information over great distances and time”

This is the only thing i have answered because your wider “how do the inca do?” question is not specific enough to be answerable.

And the answer to that specific question is that no maintenance information needs to be transmitted and the construction information is spread as folk tradition. Bridges are usefull enough that local villages want them to be built, and they are perfectly manageable as a local effort. And then the next village sees that a bridge was built, they also want one and find someone who knows how to build one and they do. You repeat that a bunch of times and you have a bunch of rope bridges all around. There is no mystery there.

This idea was so alien and unbelievable to you that you accused me of promulgating some sort of conspiracy of playing down the importance of literacy. Not cool.