I also have red/green colorblindness, but it's not as if color coding would have an 8-12% failure rate. Typical red/green color-indistinguishability mostly appl

I also have red/green colorblindness, but it's not as if color coding would have an 8-12% failure rate. Typical red/green color-indistinguishability mostly applies to dark reds and green, though, whereas the reds/greens used in UI tend to be quite bright and vivid. People who can't distinguish vivid reds/greens are much rarer. (If 10% of men couldn't separate red from green at the stoplight, we'd have noticed a long time ago.) I agree we should include everyone, of course, which is why there should also be patterns, shapes, and sound to assist, I'm just saying color coding is not some collossal mistake. (Also, your math is off if you're assuming a 10% base rate. To have at least a 50% chance of 1 person in a group of men being color blind, you need 7 men. 1-(.9^7)= 52%.)