(30-03-2016, 02:20 PM)Koen Gh. wrote: You are not allowed to view links. Register or Login to view.I happened to read this article just now You are not allowed to view links. Register or Login to view.
It reminded me of the Voynich waters so I looked for this thread. I'm glad to see juergen already mentioned the important part: many ancient cultures did not distinguish between blue and green. While we see these colours as totally different, they did not.
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Most people know that green/red color blindness is quite common, especially males (it is a sex-linked genetic trait).
What they may not know is that blue/green color blindness (or difficulty distinguishing whether it's blue or green in the transitional area between the two) also occurs (it's not frequent, but it's not uncommon either), in both men and women.