The terrorist organization Aum Shinrikyo found inspiration in the galactic empire of Isaac Asimov's Foundation Trilogy.
And concerns about how realistic galactic empires are will just send George Lucas laughing all the way to the bank.
And they were engaged in fierce and frequently divisive debates within the collectives and family trusts that owned most of the ships in the Outer System.
These are sort of legal institutionalized coup d'états.
A valuable sourcebook for anybody designing a science fiction universe.
From stellar dynamics to types of interstellar governments, this book belongs on the shelf of serious SF authors.
There are those who in the realm of science fiction literature wonder if galactic empires are the new "Middle-Earth".
But interstellar empires never seem to go out of style, and regardless of their practicality they remain a powerful meme.