17 d’abril 2020

A known unknown

Coronavirus and the Limits of Economics
Why standard economic theories have no answers for this kind of crisis

You'll find an interesting article in FP

Economists have long made the distinction between uncertainty and risk. Uncertainty is typically understood as involving outcomes that cannot straightforwardly be assigned a probability, unlike risk. Economics offers limited resources to understand how to make decisions in the presence of fundamental uncertainty. But a still deeper form of uncertainty is one in which the possible outcomes cannot easily be anticipated at all. Such a wildly unpredictable outcome has come to be popularly known in recent years as a black swan event.
 The coronavirus pandemic might at first appear to have been such a black swan event, but that claim does not withstand scrutiny: The possibility of such a threat was long recognized by experts. This recognition led to scenarios being discussed at the highest levels of governments. The possibility of a pandemic was therefore a “known unknown” rather than an “unknown unknown.”
Consider that an economy cannot be separated from society: It is socially embedded. The notion that the economy can be analyzed independently of the public health, political, or social processes—often promoted by the dominant tradition in economics and reflected in general equilibrium theory—is shown by the pandemic to be not merely fragile but false.
PS D Rumsfeld stated:

Reports that say that something hasn't happened are always interesting to me, because as we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns—the ones we don't know we don't know. And if one looks throughout the history of our country and other free countries, it is the latter category that tend to be the difficult ones.


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