I missed this the first time around, about a year and a half ago, but it parallels many of the points that I made in my piece at The New Atlantis about the same time.

[Update late morning]

Airbus seems to be getting serious about space. I don’t see how the centrifuge helps all that much, though. The radius is too small for significant gravity, though it would help a lot to put the plumbing in it.