The premise that biological human races are a product of reproductive isolation is false?

Racialization (is that a word?) and speciation are touted by ';experts'; to occur due to geographical and reproductive isolation. Lions, leopards, cheetahs are three kinds of large cats that cohabit the same geographical area in sub-Saharan Africa, so how did they occur by nature? Science blows on this one?





What do you think, is this evidence that the premise that biological human races are a product of reproductive isolation is false?The premise that biological human races are a product of reproductive isolation is false?
its not the same as the big cats, white people come from europe, black people are from africa, asians are from asia, native americans are from asia; white people bred with other white people, black people bred with other black people, etc whats so far fetched about that? maybe you should take the ';experts'; word for it because they are the experts, btw those big cats came from something known as divergent evolution and they are not different races they are different species