If, in the year 6789, society “discovers” racial superiority is real and scientifically valid, would that be a regression?

While fully acknowledging that racial superiority is baseless and harmful in our current understanding. Imagine this: In the year 6789, humanity discovers a “scientifically” verifiable basis for racial superiority—something as widely accepted as gravity today. Society restructures itself around this “truth” and acknowledges racial hierarchies.

Given our current understanding that racial superiority is harmful and untrue, would this new belief in the future represent a regression in moral, social, or intellectual terms? Even if this idea is accepted as an undeniable fact in that time, could we still call it a step backward? Or does this scenario suggest that what we call “progress” is deeply tied to the era and biases we live in, and that our moral framework may not be as universal or objective as we think?

I’m not advocating for racial superiority—just trying to question what progress really means when it comes to moral and societal beliefs, and whether moral progress is truly linear.