As Chang discusses in his new book,

Despite what the experts want you to believe, there is more than one way of 'doing' economics

 People have been led to believe that, like physics or chemistry, economics is a 'science', in which there is only one correct answer to everything; thus non-experts should simply accept the 'professional consensus' and stop thinking about it.

 Contrary to what most economists would have you believe, there isn't just one kind of economics – Neoclassical economics. In fact there are no less than nine different kinds, or schools, as they are often known. And none of these schools can claim superiority over others and still less monopoly over truth.