But to begin making sense of the new information that’s now before our eyes, it is not enough to compile and sift vast quantities of data. A conceptual shift is also required. To make that shift means retracing some of the initial steps that led to our modern notion of social evolution: the idea that human societies could be arranged according to stages of development, each with their own characteristic technologies and forms of organization (hunter-gatherers, farmers, urban-industrial society, and so on). As we will see, such notions have their roots in a conservative backlash against
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