Uniformity of motive

In astrobiology, uniformity of motive is an essential assumption of the zoo hypothesis explanation to Fermi's paradox. The zoo hypothesis states that alien civilizations refrain from contacting Earth, so as to not interfere in natural evolution and cultural development, or to minimize risk for themselves. Certain technological, political or ethical thresholds and standards could be implemented for other civilizations to pass, after which contact would be established.

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