[Longlius]

>Our ever-increasing population

Even the most optimistic projections put the world population peaking well before 2100. Growth has slowed considerably and will likely continue to slow even more as worldwide economic malaise puts further pressure on birth rates (especially since the developing world is urbanizing and urbanization is correlated with a decline in births per woman).

[throwaway6532]

What say your population of young people halved every generation for three generations. Would your city or country have enough people to keep it functioning given the level of specialization required for the level of complexity it is based on?