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Raghuram Rajan, soon to be India’s chief central banker, has an excellent piece today dissecting “The Paranoid Style in Economics” and counseling humility for folks engaged in economic policy. A short excerpt:

All of this implies that economic policymakers require an enormous dose of humility, openness to various alternatives (including the possibility that they might be wrong), and a willingness to experiment. This does not mean that our economic knowledge cannot guide us, only that what works in theory – or worked in the past or elsewhere – should be prescribed with an appropriate degree of self-doubt.

But, for economists who actively engage the public, it is hard to influence hearts and minds by qualifying one’s analysis and hedging one’s prescriptions. Better to assert one’s knowledge unequivocally, especially if past academic honors certify one’s claims of expertise. This is not an entirely bad approach if it results in sharper public debate.

The dark side of such certitude, however, is the way it influences how these economists engage contrary opinions. How do you convince your passionate followers if other, equally credentialed, economists take the opposite view? All too often, the path to easy influence is to impugn the other side’s motives and methods, rather than recognizing and challenging an opposing argument’s points.

The whole piece is worth a read.

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