Razib Khan exposes a startling paradox: while India is the world's most populous nation and a genetic goldmine, its own scientific institutions have effectively halted the study of its ancient past. In a field moving at breakneck speed elsewhere, the subcontinent has become a blind spot, leaving the rest of the world to piece together its history from scraps found in neighboring countries. This is not just an academic delay; it is a silence that obscures the very roots of a civilization that shaped human culture for millennia.
The Genetic Tapestry
Khan begins by establishing the sheer scale of the region's complexity, noting that "some 25% of humanity lives in the Indian subcontinent; neither quite of the Occident, nor of the Orient." He argues that this demographic weight is matched by an equally profound biological diversity, where the landscape serves as a "refugium for hominins during the cold, dry Pleistocene." The author frames India not merely as a crossroads, but as a unique crucible where distinct human lineages merged. As Razib Khan puts it, "India's riotous linguistic and religious diversity also mirrors deep biological diversity."
This framing is crucial because it moves beyond simple population counts to explain the structure of that population. Khan details how the subcontinent is defined by the "India-cline," a genetic gradient stretching from the northwest to the southeast. He explains that most modern Indians are a mixture of two ancient groups: the Ancestral North Indians (ANI), related to West Asians and Europeans, and the Ancestral South Indians (ASI), who are indigenous to the subcontinent. "In the very genetic diversity of its people, India is bewilderingly complex," he writes, highlighting how peripheral populations reflect Tibeto-Burman or West Asian origins while the core remains a distinct blend.
The argument here is effective because it uses genetics to validate historical and linguistic observations. Khan notes that the arrival of steppe pastoralists around 1800 BC "further transformed Indian genetics, but especially Indian culture in terms of language and ritual." This suggests that the genetic data does more than map ancestry; it illuminates the spread of the Indo-Aryan language family and the reshaping of religious practices. However, a counterargument worth considering is whether this genetic model oversimplifies the fluidity of identity, reducing complex social histories to a binary of "migrant" and "indigenous" that may not capture the full nuance of ancient social interactions.
In genomics and paleogenetics today, four years is practically eons; the span between 2017 and 2021 saw orders-of-magnitude gains in our understanding of, for example, Pleistocene Europe, the Middle East and the Americas.
The Stalled Progress
The tone shifts dramatically as Khan turns to the current state of research. Despite the theoretical importance of the region, the practical progress has ground to a halt. He points out that while China has surged ahead, releasing thousands of ancient DNA results, "India, meanwhile, saw no progress." The situation has become so dire that foreign labs are outpacing domestic ones, with a Fudan University lab recently publishing a study on a 6th-century AD Indian-origin man buried in China. "The tap has run so dry that China literally releases more ancient Indian DNA than India does itself," Khan observes with biting irony.
This stagnation is particularly frustrating given the high-profile work done in 2019 by Vagheesh Narasimhan, which utilized ancient DNA to demonstrate that the Ancestral North Indians had two distinct components: one related to the lost Indus Valley Civilization and another from steppe pastoralists. Khan reminds us that this was a breakthrough moment, yet the momentum was not sustained. He notes that while multiple Indian labs have "teased imminent publication of ancient DNA for years, and then somehow none of these ever materialize."
The author offers a potential explanation: the ubiquity of cremation in Indian history has made DNA retrieval difficult. "Cremation's ubiquity across much of Indian history overall has surely hobbled DNA retrieval, but this is not the whole story," he writes. This is a critical distinction. If the barrier were purely technical, international collaboration could overcome it. The fact that it hasn't suggests institutional or political hurdles that are keeping this data locked away. Critics might note that the focus on ancient DNA can sometimes overshadow the value of studying modern genomic variation, which has immediate implications for healthcare and disease prevention in the region. Yet, without the ancient context, the modern data lacks its historical anchor.
The Missing Narrative
The core of Khan's argument is that the lack of new data is not just a scientific gap but a cultural loss. The Indus Valley Civilization, once a "font of cultural wisdom continually reshaping its neighboring civilizations," remains a mystery in its own backyard. Khan highlights how the decline of this civilization and the subsequent arrival of pastoralists led to a rewriting of history where "Indian mythological memory Āryāvarta... was reshaped by these intrusive pastoralists, who in the process wrote their Indus Valley Civilization city-building predecessors out of the narrative."
By failing to generate new ancient DNA, the current administration and scientific community in India are allowing this historical erasure to persist. The inability to sequence the genomes of the people who built the great cities of the Indus Valley means we are still relying on models from decades ago. "In 2025? Same. Exactly nothing new," Khan concludes, emphasizing the absurdity of the situation. This is a powerful critique of how scientific priorities are set. The region that holds the key to understanding the diversification of Eurasian humanity is being ignored by its own stewards.
Bottom Line
Razib Khan's most compelling point is the stark contrast between India's demographic and historical significance and its current scientific paralysis; the region is a global priority for understanding human history, yet it remains a data desert. The argument's greatest vulnerability lies in its reliance on the assumption that more ancient DNA is the only missing piece, potentially underestimating the complex logistical and ethical challenges of conducting such research in a modern, diverse democracy. The reader should watch for whether the next wave of genomic breakthroughs will come from within India or continue to be produced by foreign institutions studying Indian heritage from abroad.