Just to prove we have perceptual deficits when it comes to differentiating the outgroup.
AKA No, you can’t “just tell”. Unless you’re in that group.
I kept this down to Asian or African and you’ll still get at least a handful wrong. Everyone would. Getting it correct would be a fluke.
Answers in the file name.
“They all look the same to me” is just realistic.
Starting on non-white people who can’t tell the difference between various Europeans is not helpful, especially when those Europeans do their best to act and dress like a homogeneous blob. I can’t tell who was part of the Norman invasion and who’s part Viking and that’s the ingroup.