actually, asians dont look the same at all. what it is, your brain is no good at recognizing the variety.
there was a test done some time back, i cant recall the name or people who did it. but basically, they got a bunch of babies and showed them pictures of these raccoon like creatures.
when babies where shown the picture, they reacted and laughed, if they where then shown the same picture again they would not react. however, if the picture was different, they would keep reacting and laughing as they could recognize that it was a different one.
when the same test was done with older toddlers, they would only react to the first one, and no matter how many times you changed the picture they would not react, thinking that its still the same one.
these creatures look identical to us adults, but babies can tell them apart with ease.
so, there is a part of the brain that is in charge of facial recognition, as you are not surrounded by asians from a young age, it gets to the point where ’‘they all look the same’’ but really… they all look very different, its just you cant tell the difference because your brain was not trained to recognize that type of face.