James Pethokoukis of AEI says this is the most important economic chart in Western civilization. I completely agree.
The concept is so important that no student should receive a passing grade in any economics class—whether in high school or college—unless they can explain why economic growth matters (ideally, every educated Christian would be able to do so too since it has theological implications).
Yet, sadly, few Americans recognize its importance despite the fact, as Pethokoukis notes, that in real terms, the average income of Americans over the past two centuries went from $2,000 per person to $50,000. Pethokoukis credits the change to a shift in thinking: Respect and reward innovators and innovation. He includes a great quote by Deirdre McCloskey on how the West became a business-admiring civilization:
What changed were habits of the lip. It’s not a “rise of the bourgeoisie,” but a rise in other people’s opinion of the bourgeoisie that makes for economic growth — as it is now doing in China and India. When people treat the marketeers and inventors as having some dignity and liberty, innovation takes hold. It was so to speak a shift in “constitutional political economy,” as James Buchanan puts the point. People agreed on the meta-rule of letting the economy go where it will. This contrasted with the earlier mentality, still admired on the left, that treats each act of innovation as an occasion to go looking for its victims. Victims there were, but they were greatly outnumbered by winners. It was ideas, not matter, that made the winners, and brought our ancestors from $3 to over $100 a day.