Yeah, very interesting presentation I thought.
I do have some questions though:
1) If the population is effectively static (in Europe/Americas) then surely this has an effect on the economy - I think I'm right in saying that one of the biggest factors in economic growth is population growth isn't it?
2) As demonstrated by last week's programme (the Japanese birth rate), the reduction of children per couple from 6 down to the current 2 might overshoot and drop further (thereby dropping the overall population of the earth) and that means economic catastrophy doesn't it?
(Stealth edit for clarity, sorry)