My point wasn't to suggest that skin tones are the only thing in the world that aren't considered by all the people during all product design phases. It was mor

My point wasn't to suggest that skin tones are the only thing in the world that aren't considered by all the people during all product design phases. It was more that we know that this is a problem in our bubble of communication, we know it just as much that we know that grass tends to be green (or yellow-ish when it doesn't rain for a while and the sun is out). It's more that having a higher quantity of a known problem doesn't make the problem go away, and neither does trying to find a single source or single instigator of a systemic problem. It's not a new problem either. If we take skin color and replace it with finger length for devices that require you to grip it, or with distance between the eyes for things that you look through, we have the same issue. In that regard this is just another facet of ergonomics in design. Even if we were to test for a lot of things in a lot of places in the supply chain you still can't catch everything.