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I had to scroll down 7 comments (on the TC site) to find someone who wasn't pointing out inaccuracies in this article.

The annoying thing is that some of them are commonly-abused statistics (such as the SMB export statistic). Seeing that early on immediately marks this as low-quality political editorial. Look elsewhere for a history lesson.

You can please some of the people, some of the time

"1 billion consumers worldwide will enter the middle class in the next 15 years – 80% of this growth will be outside of the U.S."

Saying that 200 million Americans will enter the middle class in the next 15 years might be worth pointing out though. Where is he getting that statistic?!

McKinsey (http://www.mckinsey.com/insights/urbanization/urban_world_ci...)

The only way I can figure it is if at least 100 million leave the middle class first.

If you define middle class solely by income (rather than accumulated wealth), and consider them "middle class" just from one year's worth of middle class level income (an abberation, basically), then this may be perhaps possible?

I remember there was an article on HN that described such "income churn" for the population, and it was tremendous how people enter and exit mid to high income ranges throughout their lives.

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