> a certain assumption of the population pyramid

What is this assumption? The pyramid should look like… a pyramid? Don’t you see the elephant in the room: the population can’t infinitely grow on a finite universe.

GDP, dept, income… anything that is virtual can grow as long as you find a way to describe and write them. Ressources and space can be optimized within the boundary of what the known science let us do and what the humans tolerate.

Don’t get me wrong, I’d love a future with 100s Billions humans eating delicious and healthy meals made of pure fusion energy in a Saturn orbit cafè. Let’s find out solutions of the problems caused by the current demography before increasing it, otherwise it’s betting our descents future on the retirement system.