What if they progressed beyond that? And were mindful of pre-that clean up? In t...

		chiefalchemist on Dec 17, 2023 \| parent \| context \| favorite \| on: Possible to detect an industrial civilization in g... What if they progressed beyond that? And were mindful of pre-that clean up? In theory it feels that the more advanced they were the less likely they were to leave a trace we might find.