Thank  you Sergio, for pointing to this very compelling example of how the ideas in my are far from : this video brought back the memory of the about the the misterious landscape ship I read that probably gave me the for the Outer Layer in my novel: a hexagonal grid of cityships around the Earth, where 23 of the total 27 billion Earth inhabitants will in 4444AD. Their space however is a virtual space, so the actual space needed to house them is far less…..