Does there exist

[james_davis_nicoll]

An SF novel whose setting knowingly includes a global example of a Stage Five society?

[not interested in examples where death rates exceed birth rates for reasons due to calamities like war, famine, plague and the like; those aren't really Stage Five societies]

Comments

[ross smith (from livejournal.com)]

A large chunk of Arthur C Clarke's output, e.g. Rendezvous With Rama and Imperial Earth.

-- Ross Smith

[mmcirvin.livejournal.com]

Yeah, Imperial Earth is the closest example I can think of. Most of the ones that look like Stage Five societies have some pathological explanation like an infertility plague in their past.

[james-nicoll.livejournal.com]

As was pointed out to me, it has a Big Crash in its past.