Sifr wrote:Its also possible to Link in to a moving object, as the whole Gahreesen Prison Links work in this way.
I could be wrong, but I think I remember reading somewhere that there was some kind of crazy synchronization necessary in order to link into the cells on Gahreesen and not get stuck in a wall. This also would have enabled the D'ni to use one linking book to link into each cell on any given floor, based on when they linked.
It calls into question how specific a linking book has to be, and what the motion of a link-in spot is relative to. Obviously the movement of the planet an age is on is insignificant, but if a linking book is written at the top of a ladder, which is then removed, using the book later would drop the user from 10 feet above the ground, so that location obviously matters. But is the location relative to the planet, or simply the ground? If it were relative to the ground, then the Gahreesen Prison would not require any kind of synchronization, a book written in a specific cell would always link to the ground in that cell.
What does all this mean? Not sure, I'm obviously rambling.

But I think that we can draw a conclusion that linking positions are relative to the planet itself, then writing a linking book to a moon wouldn't work, because it would be like writing the link on a ladder (thousands of miles off the ground instead of 10 feet, but the same idea), and when the link is established it would point to empty space above the surface of the age for most of the time, except when the moon's orbit crosses that point again.
Don't quote me on this, though

I'm not RAWA, this is just my speculation...