My statement was above of what is evidenced. There is some debate and evidence of the Chinese coming to America before Columbus. If so, ideas could've been exchanged.
I think I heard a little about it, but it sounds doubtful given the nature of the natives not having any immunity to sicknesses. (The Chinese would have spread them, I suppose. And syphilis would have been in China before Europe, probably.)
Even weirder is the fetch in Nordic culture and the magical concepts are the same as Aztec, with different cultural terms. A friend and I exchanged notes on it.
The logical explanation is that people come up with similar ideas, coincidentally, in cultures that have no contact with each other. Especially if it is shamanistic.
Yeah, I was just thinking aloud about contact between Norse and Siberia. I believe neither had contact with the Aztec.
I could see though, that the Siberia-Nordic thing happening and the Aztec thing being remnants of it. But I would need more evidence to be less skeptical, it's a bit of a stretch. Just saying it's plausible, however.
So what it would likely be is a common ancestor or messenger. so not of the Aztec or or the the Nordic but a culture or cultures preceding them. if there's a connection that's where it would be.
This, pretty much.