And this, incidentally, is why there never will be "more jobs". Occupation is production over productivity. With an increment of productivity, you can ramp up production up to mass-production keeping the same occupation level. But markets get saturated, so you can't increase production indefinitely. Still, productivity, with automation and robotization and renewable energy sources, could be make practically infinite. But for the reason in the post above, work is not distributed in the work-force.