20 In considering future living standards, doubling every 35 years represents a way to gauge whether future generations will enjoy an improvement comparable to that enjoyed by previous generations.
One way to see if future Americans will have better living standards is to see if it doubles every 35 years.
It's impossible to say whether future Americans will have better living standards.
Children are playing ping pong.
A car drives around a curve.
They would be good for high-technology management.
People are riding bikes.
A man using a crappy disposable camera takes a photo right before dawn.
There indications that the global economy may be falling apart.