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Second Variety

Philip K. Dick · 1953novelette

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Russia nearly conquers the US/UN, who retaliate by deploying deadly autonomic machines with the ability to reproduce and evolve and the motivation of killing all living organisms, but are inhibited by badges worn by the US troops. Eventually, the machines evolve new models which threaten the existence of all life on earth.

Source · ISFDB CC BY 4.0

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