It's not easy seeing green
The whole dress that melted the internet thing has brought back a curious example of semi-demi-science about a Namibian tribe that can't distinguish green and blue, but does differentiate kinds of green that look just the same to us Westerners. This story has been floating around the internets for several years, in places like the BBC and the New York Times and BoingBoing and RadioLab, and it presents an impressive-seeming demonstration of the power of language to shape our perception of the world. But on closer inspection, the evidence seems to melt away, and the impressive experience seems to be wildly over-interpreted or even completely invented.
I caught the resurrection of this idea in Kevin Loria's article "No one could see the color blue until modern times", Business Insider 2/27/2015, which references a RadioLab episode on Colors that featured those remarkable Namibians. Loria uses them to focus on that always-popular question "do you really see something if you don't have a word for it?"
[Update — apparently the experiment under discussion never actually existed, but was concocted for illustrative purposes by the authors of a BBC documentary: see "Himba color perception", 3/17/2015. And that's why the stimuli don't seem to correspond to the claims made about them — they're essentially fraudulent.]
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