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The origins of the Navigator gene are shrouded in mystery and rumour,{{Fn|2f}}{{Fn|5}} even among Navigators themselves,{{Fn|6}} but firmly placed within the [[Dark Age of Technology]];{{Fn|2f}}{{Fn|5}} various sources date their introduction to [[M10]],{{Fn|7}} [[M15]],{{Fn|5}} [[M19]],{{Fn|8b}}{{Fn|68}} or [[M22]],{{Fn|9}}{{Fn|21b}} in most sources predating the re-emergence of [[psyker]]s in Mankind.{{Fn|5}}{{Fn|8b}}{{Fn|Note 1}} It is unknown whether they evolved on their own, or were manufactured by genetic engineering;{{Fn|2f}}{{Fn|10c}} even if the consensus pointed to the latter,{{Fn|7}}{{Fn|11}}{{Fn|68}} either would appear to either coincide with{{Fn|68}} or be a response to Mankind’s need to perfect [[Warp travel]].{{Fn|2f}} It is of note that in M41 many held a belief that Navigator gene originated from the time just before [[the Great Crusade]] which took place between late [[M30]] and early [[M31]], and geneticist responsible for the Navigator-Gene was [[The Emperorof Emperor of Mankind]] himself,{{Fn|2f}} developed through centuries of secret work.{{Fn|68}} Indeed, the first Navigators belonged to him and were under his protection.{{Fn|68}} Some Ordos amongst the [[Inquisition|Holy Inquisition]] suspect that the ancient stasis vaults beneath the mansions of the [[Navigator's Quarter]] on [[Terra|Holy Terra]] contain records of the true origin of the Navigator gene.{{Fn|3e}}