I think you’re correct that it is possible for skills or some systems of thought to shift from 2 to 1, but that doesn’t change the fact that the divide exists.
It is fascinating. We are all making unexamined judgements all the time about everything; other people, situations and ourselves, based on our brain’s tendency to take the shorthand of sterotypes, culture, personal biases, etc., and apply them to any given person or situation. If we could learn to slow down more often and challenge these unconscious assumptions, we might solve a lot of social problems.