How is it possible that all human peoples across every continent, environment and weather, all evolved into the same thing after thousands and thousands of years? Wouldn't it make sense that some subsections of humans might have a larger prefrontal cortex than others, or more capacity to understand complex concepts? Why is it that our science teaches us we are all one people, when in reality, all races should be split into subsections as we were all adapting in different environments and needs, evolving into different things within the human species, for thousands and thousands of years? Isn't it unscientific to assume we're all the same?