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. In the likely case that more than one sufficiently developed alien civilizations exist, a Uniformity of Motive with legal policy concerning the contact of newly developing civilizations would have to be established and maintained. A “Galactic Club” would be formed and maintained, possibly by an early advanced civilization. The size of a club like this would influence the likelihood of compliance by all members, since any member could break the contact rules at any point in time, making large Galactic Clubs unlikely to succeed in their goals. Plausibility of the assumption The concept of Uniformity of Motive is not a widely researched topic, as it would only resolve Fermi's paradox when all extraterrestrial civilizations would abide by the rule to not contact ‘lesser developed’ civilizations, such as Earth. Additionally, the Uniformity of Motive is purely based on assumptions and is therefore a hard hypothesis to scientifically confirm or reject. Thomas Hair (2011) researches the idea that, given that Earth is a relatively young planet, older extraterrestrial civilizations would likely follow the lead of an even older civilization - the first civilization to come up with a Uniformity of Motive (as originally proposed by Ronald Bracewell). He calculates using Monte Carlo simulations that there would be an enormous time gap between the first civilization and the emergence of Earth, During that time span, a first civilization could spread its rule throughout the galaxy. Still, the uniformity of motive is a difficult galactic rule to uphold when most extraterrestrial civilizations are scattered over thousands of light years, restricted by natural speed laws. Due to the amount of civilizations that could be present in our galaxy, the assumption of a uniformity of motive would be arguable, proposes Duncan Forgan. Forgan reconsiders this idea that the galaxy would be rather made up of Galactic Cliques with similarly evolved cultural norms than one big Galactic Club. Convergent cultural evolution Convergent cultural evolution could explain the emergence of uniform motives in a possible Galactic Club. This convergence on a