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- #13,251
It doesn't matter for most things but I know aviation won't employ pilots who are colour blind. There are a number of activities that require correct colour visuals.Most of us fall into a small enough range to agree on the primary colours at least. I have met a few people who are what is described wrongly imo, as colour blind when I worked in a R&D dept. They saw colour just, fine but red a green got mixed up.