What Genetics Tells Us About The Evolution Of Indian Society

India’s history has been dynamic, as full of energy and full of contention as any lively society’s history would be – and this, despite the dead weight of casteism that we have carried for two millennia.

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India’s history has been dynamic, as full of energy and full of contention as any lively society’s history would be – and this, despite the dead weight of casteism that we have carried for two millennia.

There was a huge social cost to the new social construct [from the second century CE], as indicated by genetics, again, as David Reich explains it in Who We Are and How We Got Here:

“People tend to think India with its more than 1.3 billion people as having a tremendously large population, and indeed many Indians as well as foreigners see it this way. But genetically, this is an incorrect way to view the situation. The Han Chinese are truly a large population. They have been mixing freely for thousands of years. In contrast, there are few if any Indian groups that are demographically very large, and the degree of genetic differentiation among Indian jati groups living side by side in the same village is typically two or three times higher than the genetic differentiation between northern and southern Europeans. The truth is that India is composed of a large number of small populations.”

In essence, the social structure that was imposed in the second century CE has cut the country into ‘tukde, tukde’ (pieces), to use the vocabulary of television news channel discussions in 2018. When you divide up a people like that, a society’s ability to maximize the potential of its individuals is severely affected and, equally importantly, fellow feeling even among people who live in the same locality is dampened, thus aborting the possibility of common actions that would benefit everyone. To what extent this has hampered India, as a nation, is perhaps a question that only sociologists will be able to answer, hopefully quantitatively, some day.

What we know now is that this was not inevitable. This was not the direction in which India was heading till around 100 CE when we seem to have halted suddenly, and turned back on an issue of crucial social importance. It would be wrong to think, though, that the ideological confrontation between what Aryavarta represented—or perhaps what an ...

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