#59: Laura Spinney
Proto and the Deep Kinship of Language
Episode Summary
In this episode of How Humans Work, Jef sits down with science journalist Laura Spinney, author of Proto, to unpack the extraordinary story of Proto-Indo-European — the ancestral language that gave rise to nearly half of the world's living tongues, from English and Hindi to Spanish and Russian, as well as extinct languages like Latin, Sanskrit, and Ancient Greek. Laura explains the central puzzle her book tackles: this language died out more than 4,000 years ago and was never written down, yet linguists have managed to reconstruct roughly 1,600 word-stems by comparing patterns across its descendant languages.
The conversation traces how three disciplines — linguistics, archaeology, and ancient DNA — converged over the last two decades to resolve a long-standing debate between the "Anatolian theory" (origins in Turkey with early farmers) and the "Steppe theory" (origins with nomadic herders north of the Black Sea). Landmark genetic studies from 2015 revealed a major turnover in Europe's gene pool around 5,000 years ago, pointing to the Yamnaya people of the Pontic-Caspian steppe as the likely first speakers. Jef and Laura also explore the contested question of when and how horses were domesticated, and how mobility — whether through early horseback riding or horse-drawn wagons — may have fueled the rapid spread of these languages and the trade networks of the Bronze and Silk Roads.
Beyond the science, the episode ventures into the human meaning of this deep history. Jef reflects on his own DNA findings pointing to Transylvania and the Szilágyság region, prompting a discussion with Laura about how genes, language, and culture don't always travel together — his own Hungarian surname, for instance, comes from a non-Indo-European language despite ancestry in Indo-European-speaking regions. They also discuss the burial rites of steppe cultures, where warriors were interred with their horses as if mid-journey, a window into a worldview deeply entwined with mobility and the natural world.
The conversation closes on the contemporary resonance of Proto's themes: migration, language death and birth, and the fear of change that underlies nativism and nationalism today. Using examples like shifting language demographics in the United States, Laura frames migration and linguistic change as a constant throughout human history rather than an aberration, arguing that only languages which adapt survive. Jef ties this back to the podcast's broader thread on social cohesion, suggesting that recognizing our shared deep ancestry — through the Silk Road, Bronze Road, and beyond — can foster more connection across seemingly different cultures and languages today.
About Laura Spinney:
Laura Spinney is a Paris-based writer and science journalist who has written for the Guardian, FT, Nature and Atlantic, among others. She is the author of two novels, one work of fiction in translation, and three books of non-fiction, including her bestselling account of the 1918 ‘Spanish’ flu, Pale Rider. Her new book Proto, the story of the world’s most successful language, was published in 2025.
Episode Topics:
The ASAP origin story — Priscilla Higham, founded ASAP in 2003 after driving through the Eastern Cape countryside and finding villages devastated by HIV/AIDS with no help reaching them.
Why the terrain and service provision priorities hamper rural villagers. The Matatiele region near the Lesotho border is 5-7 hours from an airport, dirt roads, poor connectivity, no running water in many villages reduce opportunity and social wellbeing.
The cultural and tribal context in these Sotho and Xhosa communities. The dynamics involved in supporting the social fabric is a core aspect of ASAP’s involvement.
Three core problem areas — child development, food security/sovereignty, and gender-based violence, all under an overarching poverty-alleviation mandate from Priscilla's founding vision.
The assets-based community development model — rejecting "give a man a fish" aid; finding proactive people already doing something in a community (often women) and resourcing them rather than delivering solutions from outside.
The Imbizo — the traditional tribal community meeting structure, and the gendered constraint where Linet and the ASAP team have to negotiate the patriarchal structure.
Documentation crisis — undocumented children (cross-border parentage with Lesotho, DNA testing requirements, Home Affairs bureaucracy) blocking access to school, social grants, and matric certificates is a major hurdle to clear in unlocking the cycles of poverty and trauma.
Gender-based violence work — how important this work is to changing the trauma cycles and why legal cases, changing tribal bylaws (removing the requirement that rape be reported to the chief before police), and GBV workshops are instrumental in moving across the GBV problems.
Water and food security — borehole/solar water projects bringing running water to two villages for the first time; household and community gardens; crops grown (cabbage, spinach, beetroot, green peppers, brinjal, carrots, kale, potatoes, pumpkins, butternuts, beans, maize, turnips); excess produce donated back into the community; grandmothers ("gogos") mentoring youth gardeners.
Technology/scale — pursuing low-earth-orbit satellite connectivity and a suite of smartphone tools (bookkeeping, attendance, compliance apps) to help ASAP scale from 4-5 villages to 11 and beyond.
The donor/community model — Why the donor community model is critical to long term success. We learn how Scilla's personal network was leveraged to sustain "community of supporters," and reflections on long-term partnership vs. reactive/crisis-driven philanthropy.
