Narasimhan, though, seeks to defend genetics against all the racist antecedents: “Ethically, there is nothing inherently different about the work we do when compared with historians or archaeologists,” he says. “I believe human history is the common heritage of all humans, and it’s amazing to be able to study this directly, in a way, for the first time. This technology has not just been employed to understand the peopling of South Asia, but also of the Americas, Europe and Africa. We are also able to understand interaction not just between groups of modern humans, but also the interaction between modern humans and other archaic hominids, such as the Neanderthals.” He obviously has a point there, and the future lies perhaps in greater coordination—and ensuring genetic research is passed through the filters of commonly accepted protocols—not avoidance. That would enable the strong caveats already known from other sciences to be employed—such that genes, race and language cannot be mapped on to each other unless corroborated by other sciences. Just like the slippery link between script and language, populations too have always been known to shift language.