“What conditions would allow a sophisticated and civilized society that has space travel to turn inward and no longer see what it’s doing to itself?” he adds. “We likened it to a feudal, hyperconservative kind of society that no longer believes other planets were worth visiting and mothballed those fleets. Ancient, doddering old fools running society and paying no attention to science or more enlightened minds.” – Alex McDowell

(Sounds basically like the USA and Canada)