This editorial discusses how genomic studies are being used to understand the origins of language in humans. Researchers are attempting to pinpoint the earliest divergence in modern human populations, specifically between the Khoisan people of southern Africa and the rest, to establish a lower bound for when linguistic capacity developed – at least 135,000 years ago. The article highlights the difficulty in reconstructing very old languages, pointing out that many early languages are "known unknowables," lost to time. It acknowledges the distinction between linguistic capacity and fully formed language, suggesting the former may have predated the latter.
