>A human idea surely?
Do you know of any ideas that aren't human?
Your desperate bid to turn this discussion into yet another fruitless argument about beliefs is really tiresome. And clearly, the present AoM isn't biting, so give it rest.
The only ideas/beliefs in question here are those that might be deduced from the
evidence of the structure itself, the ideas/beliefs of the people who built it.
Whether you or anyone else "agrees" with those ideas/beliefs is wholly irrelevent to the discussion.