Re: Bets
"How exactly does one build one of those on the Moon or Mars so you can re-use starship ?"
The same way one builds them on the Earth; Navvies, shovels, picks and big, yellow digger machines. One does not need a degree in Media Studies to be employed on Mars,
the Moon, Mercury or even Titan to ask: "Do you want chips with that?"
Sure, if the vehicles can *only* lift off from a specially-prepared runway, even under lower than Terran gravity, the first few will need to load up on Navvies and shovels then
wait around for a while but that's just Administration, engineeering and accounting. It sure isn't rocket surgery.
Oh, the diggers are vastly too big to be taken up in one piece so would probably need a few "Starships" each and a guy with a screwdriver set. Or hex wrenches. Maybe both.
But again that's just organisational stuff. Hell, given a set of poorly-copied diagrams, *I* could maybe fix them together. Eventually.
If it can be built in Bognor, it can be replicated on the coast of a Titanian lake. The latter may even be cheaper: no Union rates and no Health-and-Safety.