re: re:Refurbishing fuel in space
"Besides, there's another problem: if fuel is required for an empty tank, in space, it must come from somewhere...From Earth, thus....meaning launching fuel with an expensive new rocket."
Launching fuel from Earth should cost less than launching crew or vehicles or expensive satellites.
BUT the most important thing is it is one step towards making a market in space- and if you want to do anything significant in space you need to establish markets.