> I congratulate you on an accurate diagnosis, I think all three are true.
Hah, fair enough. Thanks for getting the Culture back on the front page of HN :)
> I don't remember the details of Excession very well as I didn't actually like it
If you were actually referring to the Sleeper Service - I think you still remembered something like the opposite idea of what happened in the story. The twist was - (Spoiler!) - the Sleeper Service was actually not Eccentric at all, and had not built up a small army as a Mind that had gone rogue, but had actually done this as a planned failsafe in conjunction with a number of other Minds. Hence the multi-level pun of its name.
> I don't remember that at all, perhaps you could tell me which book to look at.
I'm afraid I can't remember exactly which books this was explored in, though Inversions, State of the Art and Player of Games are books where the Culture is explicitly compared to other civilisations and so more likely to have mentioned it.
Also Banks' essay /A Few Notes on the Culture/ covers it quite well if you haven't come across that yet. Very short but I think very readable and interesting.