On 29Apr2020 0142, Timothy Collinson - timothy.collinson at port.ac.uk
(via tml list) wrote:
> Yes, I think the Grand Survey/World Builders' Handbook (and possibly
> Book 6: Scouts but I can't be bothered to cross the room and pluck the
> book off the shelf) is "S" for smaller than 1600km.
>
> I quite like the idea of "X" for artificial though. Although I
> immediately start to wonder how you represent really *big* artificial
> constructs that might ordinarily be size "8" say.  The Magrathean
> planet builders come to mind.
If it's big enough that a normal 1-A size fits it, it gets that size
rating. That's how I'd do it. The real question is what do you give a
ringworld?

--
Rupert Boleyn <xxxxxx@gmail.com>