I'll go find the essay she did for a book on writing sci-fi, but worthless seemed to hit the mark. I got the impression of 'anything you can do, I can do better' in space kind of thing.
I started off in a tangent about 'probably not a meaningly useful population in the foreseeable future', and then I asked myself, 'why are you trying to engage a book in a conversation', and got very quiet.
Doug
Edit: By the way, I had an orbital campaign worked out, on a 2d map, of course, that kept plot of where the ships were in relation to planetary surface. The various orbit levels: do they seem to be inside or out of stationary, my nearest orbit.