Black and white. Good and bad. Yin and yang.
Why are people so VASTLY different from one another? From crappy to angelic. From dull boring to brilliant and endearing. I know there are many varieties of every species. A bazillion kinds of mangoes or apples or fish or whatever. How many varieties of homo saps are there and do more types/subspecies keep showing up over time? Is evolution constant and going on right under our noses 24/7? Is there a limit to the number of varieties in any species? Can there be one thousand different whatevers of anything. Are there some species in existence we haven't discovered yet?