Researcher must take caution when doing this kind of research because high correlation doesn't mean one caused the other. What was the research method? What was the variables considered while doing this research? Was the sample big enough? There are many factors that affects one's capabilities and we cannot just conclude that Newars are good in learning new skills and Bahuns are good in Maths and Urdu speaking people are good in science. This type of hasty generalization can create Eugenics in our society. Twins of same genetic make up can show different characters provided different environments. Researcher also needs to take into consideration that environment plays big role. There are many lurking variables that needs to be scrutinized before coming into conclusion. These type of conclusion creates bias in our society and can create an unequal treatment to different classes.