It (i. e., agriculture) was the most profound revolution in hominid living since Homo erectus had left the forest and committed themselves to the sav… - Stephen Baxter

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It (i. e., agriculture) was the most profound revolution in hominid living since Homo erectus had left the forest and committed themselves to the savannah. Compared to this phase shift, the advances of the future—even genetic engineering—were details. There would never be so significant a change again, not until humans themselves disappeared from the planet.