emergent-evolution

emergent evolution

noun
the origin of entirely new properties at certain critical stages or levels in the course of evolution, as multicellular organisms, sexual reproduction, or nervous systems.

Origin:
1920–25

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World English Dictionary
emergent evolution
 
n
philosophy the doctrine that, in the course of evolution, some entirely new properties, such as life and consciousness, appear at certain critical points, usually because of an unpredictable rearrangement of the already existing entities

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