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Here's the same image in black and white: https://i.imgur.com/x2QzHgB.png. Do you see five clear clusters? I only found four: https://imgur.com/AFj2GWG.png.

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I was speaking off the top of my head, hence the ~ preceding the 5. That said, more clusters may be visible on a 3D graph. The data itself has many more dimensions, and we see only a projection.

Sorry, I forget that I have to explain when I'm being sarcastic on Hacker News. The actual number of clear clusters I found was zero, maybe 2. The four groups I colored on the chart seem to follow the cleavages just as well as the ones shown originally, but they don't map to our culture's understanding of race at all. If we lived in a culture that believed that Europeans and Indigenous Alaskans were part of the same race, they could support that idea using that chart.

Perhaps more dimensions would reveal five or so clear clusters that correspond exactly to the races listed in the US census, but I suspect what it would actually reveal is that population genetics is really complicated and has lots of counter-intuitive cases that defy most people's naive expectations.

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