The new concept continues to do an admirable job of distracting him. He imagines it, or tries to: a world acting as a midway-point between dimensions. But what, exactly, does that mean in terms of space and reality? If such a place were 'in-between worlds,' would it not have to exist in a state of both 'being' and 'not-being?' Would one's corporeal form go through a similar change in state due to being there, and would there be side-effects? What does Vanessza mean by 'inhabitants who may not inhabit at all?' And most importantly—

“You could leave the other city at will.” Her wording makes it clear.