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Summary

An illustration of differences between theories of unilineal and multilineal cultural evolution.

The square, triangle and circle represent three unrelated contemporary societies under study, one of hunter-gatherers, one of horticulturalists and one of agriculturalists respectively (a representation of the three-age system). In the unilineal evolution model at left, the three societies are analogized as a progression through set stages, while in the multilineal evolution model at right, their distinctive culture histories are emphasized.

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