User blog comment:Tiredman2/Mass Effect Plot Holes and Contradictions/@comment-4953843-20120822075257/@comment-4953843-20120822142146

irrelevant details. the issue is why aren't the aliens -determined- enough to study keepers until chorban came along. 2,000+ years of citadel civilization and technological discoveries happen at a very slow pace - something quite unexpected compared to humanity's drive to ever excel in every pursuit. this just points at the general alien mindset of "if it ain't broke don't fix it". --- just as there are myriads of possibilities and (probable) impossibilities on why bekenstein remained under the aliens' radar for so long it only takes just one flimsy excuse of a reasoning to explain why that happened. it's not yet a hole in my books - just lack of elaboration.