While colonising large swathes of three spiral arms of the Milky Way galaxy, humanity discovered that simple life was hugely abundant throughout every corner of the galaxy. In line with ecological predictions, mankind also found that technologically advanced, space-faring species are relatively rare.
The paucity of such species has allowed those which do spread to the stars sufficient time and space to establish large territories, in which they are usually found to be the dominant intelligent species.
The paucity of such species has allowed those which do spread to the stars sufficient time and space to establish large territories, in which they are usually found to be the dominant intelligent species.