I've seen a lot of different hypotheses arguing settlers reached Americas earlier and more-often than has been recorded. A couple days ago some were talking abo

I've seen a lot of different hypotheses arguing settlers reached Americas earlier and more-often than has been recorded. A couple days ago some were talking about one idea, here: https://news.ycombinator.com/item?id=19674298 https://news.ycombinator.com/item?id=19674298