[RobertoG]

>>"Retirement funds don’t strictly requiring that, they just require that there are more workers than pensioners [..]"

That's not necessary. They require that the active workers (plus capital) are productive enough to keep life standards for everybody. There is not theoretical limit for how many workers are necessary. In the extreme it could be with one or zero workers.

[ben_w]

Until we get fully automated luxury communism, capital can only be productive with workers.

Cows can milk themselves these days, but the cow self-milking machines can’t make themselves yet.