Glossary
The ability to drink milk, presented as a major Yamnaya-associated innovation that turned dairy into food.
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Topic brief
A Jiang Lens evidence brief for this topic, built from source tags, transcript matches, and linked source refs.
lactose tolerance
The ability to drink milk, presented as a major Yamnaya-associated innovation that turned dairy into food.
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Key Notes
model
The steppe’s first major innovations are lactose tolerance, horse domestication, and the wheel/wagon, each forced by the material demands of pastoral life.
evidence
The second steppe innovation is dairy and lactose tolerance, which Jiang treats as a biological-economic change that made milk usable as food.
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evidence
Jiang identifies the Yamnaya as the people behind the Proto-Indo-Europeans and says DNA evidence shows dairy and lactose tolerance were central to their diet and bodies.
Timestamped Evidence
Transcript
"The first major innovation that's very important is the idea of lactose tolerance. You may not know this, but most humans cannot drink milk..."
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Transcript
"So when they eat this in this pasture and they finish all their grass, they have to move somewhere else. Okay? So the only..."
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"Does that make sense? So what we realized what these people realized is they can take the cows, the goats and the sheep, from..."
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"that the Proto Indo Europeans existed, but now we have conclusive scientific evidence that they did exist and who they were. Okay? Does that..."
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"They were able to develop hormones that allowed them to be lactose tolerant. Okay? Okay, in about 4500 BCE, very few people could drink..."
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Relevant Lectures And Readings
Reading
A source-grounded reading of Jiang’s lecture on why the so-called barbarians repeatedly defeat civilization: empires turn innovation into bureaucracy, while the steppe turns geography, animals, inheritance, oath, myth, and violence into mobile social power.
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Reading
Old Europe begins as a Mother Goddess world of agriculture, unity, women, peace, and art.
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Reading
Gimbutas's Old Europe becomes Jiang's Paradise Lost: a Mother Goddess civilization where art, writing, sexual agency, and nonviolent social control show that war, property, and patriarchy are historical arrivals, not human nature.
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