You've said that the Cognitive Realm is an infinite plane that expands in regions with high concentrations of thought and contracts in regions with little or no thought, and also that it would be possible to circumnavigate the Rosharan Cognitive Realm. It seems to me that the seeming inherent contradiction between the possibility of circumnavigation and the plane being infinite could be resolved if the plane of the Cognitive Realm is a topology and experience localized distortions but is continuous. Like if the Cognitive Realm for the whole Cosmere were like the the inside surface of a balloon where the high concentrations of (thought) of a planet stretch and warp the local surface, but the whole system still remains bound and continous, and therefore is infinite in its continuity. Is this how you see the Cognitive Realm working? And could you elaborate if this is close or more importantly if it's way of the mark?
I imagine it as an infinite plane with distortions that are planets. So kind of.