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A response to Greg Mankiw – Part 1

On October 2, 2019, I received an E-mail from Gregory Mankiw. It was sent to me, Randy Wray and Martin Watts and asked us some questions about our textbook – Macroeconomics – which had been published by leading textbook publisher Macmillan in March 2019. The book has been selling strongly with a third printing already in the pipeline and a second edition coming, hopefully, later next year. Macmillan also publish Greg Mankiw’s macroeconomics textbook, which has been the dominant teaching book in undergraduate programs. I will take you through the E-mail correspondence that followed because it puts in context what Greg Mankiw decided to do next. Instead of continuing the correspondence on academic terms, which was a reasonable expectation at the time, given the initial approach and our replies, he decided to submit a paper – A Skeptic’s Guide to Modern Monetary Theory (December 12, 2019) – to the American Economic Association meeting in early January, which purports to be a ‘guide’ (meaning in English – a framework to convey an appreciation of something) to Modern Monetary Theory (MMT). After his initial entreaty and our responses in good faith, Greg Mankiw clearly decided that engaging with us on the terms he initially set out was not going to be in his interests and thus took another tack, without any further consultation or reference to his initial contact with us. I wasn’t impressed with that strategy. I was less impressed with the ‘guide’ that emerged. It says very little about MMT. It demonstrates how hard it is for someone deeply locked into a dominant but failing paradigm to think outside the ‘box’ for a while and try to understand that the ideas of a new and emerging paradigm cannot be meaningfully reduced back into the conceptual framework of the failing paradigm that the contender is seeking to usurp. I guess his strategy is understandable – after all – our book is now a direct competitor for his textbook and offers a new approach that has much stronger empirical correspondence. In that context, it is in Greg Mankiw’s self interest to attack our book in any way he can. The problem is that attacks have to have some foundation to resonate. Greg Mankiw’s attack is so lateral that he would have been better to have remained silent. Sure, he is playing to the mainstream groupthink echo chamber. But the echoes will die eventually as more and more people realise the mainstream is in its last death throes. This is Part 1 of a two-part response to Greg Mankiw’s paper. In Part 1, we review the E-mail trail that started all this. In Part 2, I will discuss his response.

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