[js1138]

I've seen recent film of Easter islanders finishing, moving, and erecting a monolith with primitive tools and methods.

Is the article arguing there were no geniuses before modern times?

[expatpat]

To me, his point is not very clear. I think he's arguing that the explanations made so far are completely inadequate, and then perhaps that there were geniuses before modern times, they were so smart that we can't figure out how they did it.