[hammock]

Doesn’t have to be large groups to be different groups. That seems like a fallacious argument.

Empirically/anecdotally I bet quite a few people could with 90%+ accuracy pick a (third-generation) Iberian vs Frank vs Polack vs Scandi out of a lineup just by physical features

Alternatively take a reasonably deep look at American (North or South) indigenous tribal societies- the empirical history is thinner there but similar conclusions

[Wytwwww]

> 90%+ accuracy pick a (third-generation) Iberian vs Frank vs Polack vs Scandi

If they have the same haircut, tan and clothes? Highly doubtful...

[hammock]

Someone posted a photo of eight Italian soccer players all wearing the same uniform and said “there is no meaningful difference between northern and southern Italians, try to tell them apart.”

I guessed, and got 7 of 8 correct. (The one I missed was Sardinian)

[rayiner]

The average Swedish or Danish man is more than three inches taller than the average Spanish man.

[ffgjgf1]

That doesn’t mean much and wouldn’t be particularly useful when picking a limited number of people from a lineup (certainly not at at 90% accuracy)

https://en.m.wikipedia.org/wiki/Standard_deviation