[robroys woman]

Or, to be more clear, some people are sure they’re sure, and others disagree.

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I’ve found that in such discussions, the latter may not be right, but the former virtually NEVER is. I’ve noticed with stuff like this, where nobody was actually there to record what happened, the more you know of the facts, the less sure you are regarding any one explanation. The ones that are “sure” are the ignorant dogmatists.

[Red Badger]

I’m sure....................

[gleeaikin]

“early specimens collected from Polynesia must have diverged from other tubers more than 100,000 years ago”

We have no way of knowing if people might have developed ocean transport before any struggling civilization might have been disrupted/destroyed by our most recent Ice Age.