"Until relatively recently in human history, "blue" didn't exist, not in the way we think of it."
"As the delightful Radiolab episode "Colors" describes, ancient languages didn't have a word for blue ‚Äî not Greek, not Chinese, not Japanese, not Hebrew. And without a word for the color, there is evidence that they may not have seen it at all."
According to the article, the color blue was not a generally known idea except to the Egyptians:
"The only ancient culture to develop a word for blue was the Egyptians ‚Äî and as it happens, they were also the only culture that had a way to produce a blue dye."
Why didn't other cultures have a word for blue? Is it that they didn't have the word for it or that they couldn't see it? Where did the Egyptians get the idea? If ancient cultures had a word for the sky, then wouldn't they have noticed it was blue and then developed the word? How would it be possible to not be aware of something like the sky?
This would seem to legitimize Peat's ideas of consciousness being influenced by one's environment.