The mysteries behind a lot of these ancient megalithic structures make me wonder about how sophisticated these presumed primitive civilizations actually we're.
Consider that while the invention of writing systems allowed us to store knowledge and grow our technology base, human intellect and capacity hasn't changed in any real sense over at least the past 50,000 years.
The human ability to reason, imagine and create has existed for tens of millenia. As such, such sophistication isn't all that surprising.
Once all the survival tasks are done, you really don’t want a bunch of military-age males standing around listless without direction. I think this was part of the pressure that gave way to elaborate rituals, construction projects, exploration, etc.
[0] https://ecdn.teacherspayteachers.com/thumbitem/Dragon-Grid-D...
I think you mean conjecture and ideas to propose theories about how past civilizations were able to create megalithic structures, and who they were?
https://en.wikipedia.org/wiki/Aztec_writing
It's far better than the primitive icon systems favored in modern user interfaces.
> ...some scholars have understood the system to not be considered a complete writing system...
In particular, the written and spoken forms aren't precisely equivalent. Some archaeologists consider this a bigger deal than others (I'm more on the "not a big deal" side), but it's worth noting.
Be that as it may, if it can convey ideas, it is workable.