Note: This article has nothing to do with caste discrimination. If there seems to be any implication, that's probably on your own mind.
Some people are wondered if they are brainy by birth. There is a good chance that they maybe. I am an average college student, and I used to wonder how some people are able to score mercilessly-high marks. I have also noticed that almost half of such people are Brahmins.
When I was surfing the web for some random stuff, I went through the Wikipedia article on Brahmins, which said that Brahmins had genetically evolved to be more intelligent than others, due to their involvement with studies and stuff for thousands of years!
On a study conducted by the University of Florida, it was found that Brahmins had a high tendency to carry genes related to intelligence. Russians and Ukrainians had a similar tendency but not as much as Brahmins. This was also found in some tribes of central and south India.
But intelligence alone isn't the key to development. Development requires hard work and also creativity. Neither the Chinese nor the Americans have these genes and I need not tell you about their development. But still, being born with intelligence doesn't hurt, right? ;)
Call them thayir sadham or sambhar sadham, but you still have to accept the fact that they are more intelligent than you! :)