Hans Rosling and the Magic Washing Machine

On the surface, by the title, I wondered why this was on TED. But as usual, Mr. Rosling brings a unique POV to the topic and evokes deep thought.
There are four major devisions in the world's population of 7 billion. The people of fire, bulb, wash, and air. And their energy requirements will only increase as they shift up the scale.

There are some environmentalists that proudly do not drive cars, but how many of them do not use a washing machine?

What's the real gift of the washing machine? The time to read books.

Hans Rosling makes Statistics Interesting

This is an excerpt from "The Joy of Stats" on BBC channel Four
Hans Rosling takes 200 Countries through 200 Years in 4 Minutes by animating data points - neat!
He might be the world's most optimistic person!

At the end he shows that he can break out individual provinces of China. I'd like to see him take us through individual countries and break it down into wealth vs. percentage of population vs. lifespan. I know he was using averages from each country, but still and all. Does that mean that one rich 80yr-old balances against four poor 20yr-olds? I didn't do very well in stats class...