No ethnic group all look the same. I have dated women, and , have friends across the spectrum and I can easily discern one from another among the same ethnicity's, even MOST twins(identical).Most people see the forrest before the trees, so to speak. When you study the trees first, than the forrest, you will see the difference.I can, many times, tell even different animals of the same type apart by the same reasoning-you look for the differences, not the similarities. Our minds work much like the old style analog computers, outline a certain pattern, then zero in on the finer features-this same method is used by humans at identifying. friends at distance, even before their face can be made out.