i stumbled on "stability' too, because it's a static quality.

rather than robustness, i prefer to use the term resilience, a dynamic quality, since efficiency is also a dynamic quality. you can trade efficiency for resilience and vice versa (as the parent poster switched to later).

edit:

i should add that i don't entirely agree with the thesis of the article, which exhorts us to slow down, thereby trading efficiency away for resilience. there are a number of ways to add resilience (and trade away efficiency), and in some cases, slowing down might be the best, but it's certainly not the only, or best, option in most cases.

for housing, an example used in the article, we could add more housing to create resilience, which requires reducing friction, like increasing the throughput of permitting/inspections while generally reducing zoning/regulations.