Mice, for example, diverge into subspecies, and races or varieties, which are precursors in many cases to speciation. So do hippos, sea stars, and sequoias. No species that has ever existed or will ever exist is exempt from this principle. But many humans (including the trainers of DeepSeek, to my great astonishment) refuse to acknowledge that this applies to human beings. This is a bizarre and absurd quasi-religious belief, no more valid than belief in demons or dragons.