2023-05-22 03:15:01
Lhen, in 1974, the Austrian Friedrich von Hayek received the Bank of Sweden prize in economic sciences in memory of Alfred Nobel, shared with the Swede Gunnar Myrdal, the small world of economists had expressed their emotion: how a such an ideologue, marked on the extreme right, with doubtful interdisciplinary leanings, could he deserve such a distinction?
The laureate’s response matched the disdain expressed by his peers in stating that not only were economists unsure of their predictions, but their tendency to present their conclusions with the certainty of scientific language was misleading and “may have deplorable effects”.
Nearly fifty years later, Hayek’s razor-sharp judgment resonates with uncanny relevance. Since the Covid-19 pandemic, the crystal ball of forecasters has clouded to caricature. Quarter after quarter, expectations are systematically contradicted. After darkening the post-lockdown picture, they clearly underestimated the inflationary risk. As for this recession which was to hit in 2023 a Europe weakened by the war on its doorstep, it will have been nothing but a mirage. As the American economist Ezra Solomon once quipped, “the only function of economic forecasts is to make astrology look respectable”.
The charge may seem easy, because it is much more comfortable to decipher the real once the facts have occurred. Especially since the recent period has been particularly complex to grasp. A virus with unpredictable mutations, a disorganization of supply chains like the world economy had never seen, support on an unprecedented scale decided in haste by governments, a war that no one believed in: everything competed so that, under the effect of these successive shocks, the calculation models are shattered and the credibility of economists with it.
Error is the rule
But the problem is not only related to exceptional circumstances. In 2018, a study by the International Monetary Fund (IMF)carried out by Prakash Loungani, Zidong An and Joao Tovar Jalles, had scrutinized the growth forecasts of sixty-three countries from 1992 to 2014 and had found that of the sixty recessions listed, only two had been anticipated by economists.
In 2015, in an all-too-rare exercise of introspection, the Organization for Economic Co-operation and Development had the courage to reverse its mistakes in forecasting growth during and after the 2008 financial crisis. This work had made it possible to identify an overestimate within a range of 0.9 to 1.4 points, a considerable difference in a context of an increase in gross domestic product of around 1%. Same observation for the forecasts of the Japanese government which, since 2000, have systematically been overly optimistic. More recently, the IMF also indulged in a mea culpa by trying to understand why the institution had incorrectly anticipated the inflationary phenomenon of recent months.
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