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Uniformity of motive
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== 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. [[File:Arecibo message.png|thumb|371x371px|The [[Arecibo message]] from 1974 is an example of a message that represents humankind. It was broadcast into globular star cluster M13.]] 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 N. Bracewell|Ronald Bracewell]]). He calculates using [[Monte Carlo method|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 [[Speed of light|natural speed laws]].<ref>{{Cite journal|last=Hair|first=Thomas W.|date=17 January 2011|title=Temporal dispersion of the emergence of intelligence: an inter-arrival time analysis|url=https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/temporal-dispersion-of-the-emergence-of-intelligence-an-interarrival-time-analysis/924B21BD97433B25D481A300F8D3E08E|journal=International Journal of Astrobiology|volume=10|issue=2|pages=131–135|doi=10.1017/S1473550411000024|s2cid=53681377 |url-access=subscription}}</ref> Due to the number of civilizations that could be present in our galaxy, the assumption of a uniformity of motive would be arguable, proposes Duncan Forgan.<ref>{{Cite journal|last=Forgan|first=Duncan H.|date=8 June 2011|title=Spatio-temporal constraints on the zoo hypothesis, and the breakdown of total hegemony|url=https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/spatiotemporal-constraints-on-the-zoo-hypothesis-and-the-breakdown-of-total-hegemony/06D2915B2AABA203BE0701E644C6C1C9|journal=International Journal of Astrobiology|volume=10|issue=4|pages=341–347|doi=10.1017/S147355041100019X|arxiv=1105.2497|s2cid=118431252 }}</ref> 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.<ref>{{Cite journal|last=Forgan|first=Duncan H.|date=28 November 2016|title=The Galactic Club or Galactic Cliques? Exploring the limits of interstellar hegemony and the Zoo Hypothesis|url=https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/galactic-club-or-galactic-cliques-exploring-the-limits-of-interstellar-hegemony-and-the-zoo-hypothesis/9E637E84C76BFF2FD2EDADC63CA3D1B6|journal=International Journal of Astrobiology|volume=16|issue=4|pages=349–354|doi=10.1017/S1473550416000392|hdl=10023/10869|s2cid=59041278 |hdl-access=free}}</ref>
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