18,000–16,000 BCE: (The Possible Earlier Origins of Grain Harvesting in the Horn — The Absence of Excavated Sites from the Crucial Period Immediately Precedi…

18,000–16,000 BCE: (The Possible Earlier Origins of Grain Harvesting in the Horn — The Absence of Excavated Sites from the Crucial Period Immediately Preceding 16,000 BCE Meaning We Do Not Yet Know How Much Earlier This Adaptation May Have Begun, the Possibility That It Goes Back to the High Point of the Glacial Maximum Two Thousand or More Years Before 16,000 BCE): Laga Oda establishes a firm terminus ante quem — grain harvesting was already under way by 16,000 BCE — but the question of how much earlier this adaptation may have emerged in the northern Ethiopian Highlands remains open. No excavated archaeological sites from the crucial foundational period immediately preceding 16,000 BCE have yet been studied in the region. The answer lies buried in sites that have not yet been dug. But Ehret is clear that it is not at all improbable that grain harvesting in the Horn might go back to the high point of the Glacial Maximum itself, two thousand or more years before 16,000 BCE. If that is the case, then the subsistence revolution that would eventually feed the Nile Valley civilizations was born in the coldest, driest, harshest period of the Pleistocene — not despite the crisis but because of it. Necessity, once again, mothers invention. The people of the northern Ethiopian Highlands faced a landscape stripped of its forest cover and responded not with retreat but with adaptation, turning the expanding grasslands into a resource rather than a catastrophe. The date of that first harvest — whenever archaeology finally uncovers it — may prove to be one of the most consequential moments in the history of the human species.