You're raising very valid questions. It seems to me that we'd need to have continued breakthroughs in science, technology, medicine, etc. in order to drive sust

You're raising very valid questions. It seems to me that we'd need to have continued breakthroughs in science, technology, medicine, etc. in order to drive sustainable increases in economic growth. Forecasters have predicted the end of innovation at many points, but humans do seem to have a knack of finding something new and valuable.