Predicting Economic Crisis: "What" Is Easy, "When" Is the Trick

Here is outstandingly keen insight from economist Professor Ken Rogoff, from an interview by Ezra Klein:

Start with a really important point: It’s very hard to call the timing of a crisis. You can see that an economy is vulnerable, and maybe even fairly reliably say you’ll have a crisis in 5 to10 years, but until it’s upon you, it’s hard to narrow the window down with any precision. Many of the people who say they predicted the crisis in a precise way had actually been predicting a crisis for years. There’s irreducible uncertainty coming from fragile confidence and political factors. The analogy is someone who’s vulnerable to a heart attack. You can go to the doctor and they can see your cholesterol is high and you have a number of risk factors, but you might go on for 20 years without anything happening. Or it might be 20 hours.

Because the timing is hard to call, policymakers have trouble getting seized by it. Why worry if it is not going to hit on my watch? And if you’re an investor and you’re making great money for five more years and then you have a bad year, you still have a good decade. But policymakers, especially, need to have a longer vision because of the human cost of financial crises, particularly in the hugely elevated level of long-term unemployment.