I understand the whole dimensional concept. I would hate to be the guy that went from the third dimension to the second, and back. Would I re-inflate? I hope so.
Anytime you move a dimension down there is data lost. Moving up and folding back I don’t think is a problem at least in that the moving back is the same but moving down a dimension doesn’t result in being able to come back. At least that is how I see it logically.