This passage summarizes very well the importance of the whole introduction.
It talkes about the importance of common knowledge about economics: In multiple examples (health insurance, air polution by cars, job creation in France...) Wheelan shows how economics affected politics. And he shows how a lack of knowledge of economics prevented the solving of each of these problems. Many people don't even consider looking through the eyes of an economist before taking action. All this could change with a basic knowledge of economics for everyone.
The other part states that economics are interesting. A couple weeks ago I would have disagreed with this statement, but now I can see that economics is not about money and how to invest in the best way, but much more about how people think and what leads everybody to the decision they finally make. I do think it is interesting to find out about the illogic ways that humans chose one thing and not the other even if it doesn't benefit anybody.
So overall I think that this is a powerful statement that ouches a lot of important points made allready in the introduction.
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