Lives not worth saving.

Byline: Khurram Husain

A STUDY has been doing the rounds since early April which argues that in poor countries the price of a lockdown is larger than the benefits to be gained from it. The lead author of the paper is an economist of Bangladeshi extraction at Yale, who has plenty of experience working in developing countries and is no stranger to the lay of the land here.

I first came across the study when it was being circulated in mid-April by people from industry, particularly those who were busy lobbying the government for easing the lockdown restrictions. It was subsequently cited in a few opinion pieces published in newspapers, and most recently was invoked by Planning Minister Asad Umar in his televised talk with the press in which he presented a bevy of arguments in support of easing the lockdown.

It is useful to examine this study carefully, because doing so gives us an idea of how (some) economists approach questions of pressing and urgent public importance, and the limitations of the tools that they use.

Economists have a hard time speaking plain English, especially when they attach dollar values to human lives.

The study in question is called The Benefits and Costs of Social Distancing in Rich and Poor Countries, and it is authored by Zachary Barnett-Howell and Ahmed Mushfiq Mobarak, both highly credentialled and published economists at Yale. It begins by asking whether 'shuttering the economy for weeks or months and mass unemployment are reasonable costs to pay?' in return for 'flattening the curve' of Covid-19 cases. In order to answer their own question, the authors have to first render both the costs and benefits of a lockdown into a comparable unit. The economic costs are measured in dollars, whereas the health benefits of a lockdown are measured in lives saved. So the question arises: how to compare these two quantities - lives and money - with each other?

To do so, the authors deploy a widely used model in the economics literature called the Value of Statistical Life model. What VSL does, quite literally, is tell us the dollar value of human life in different contexts. It was used originally in more limited contexts to help policymakers with complex judgements in cases where a particular policy imposed an economic cost in return for a vague health benefit. One example might be setting air quality standards.

But with the passage of time, the VSL model began to be used in contexts far more complicated and more pressing than...