>>12610405Race is a categorical feature that is relative to each culture.
It isn't "not real" rather think of it as colors and how different cultures maybe attribute more significance to colors dominant in their environment, if this helps.
The fact that Eskimos have a billion words for different shades of blue is not evidence that colors do not exist.
Words for different colors differ between cultures just like races.
Biologically, there are differences that are at the subspecies or species level.
Neanderthals and denisovans are species to some and subspecies to others not because we don't know, but rather because of different definitions used to categorize the two. Same with modern human species.
Some people consider different races as species based on dysgenic metrics of hybrid degeneration, while others use other definitions to separate them as subspecies instead.