Whether it's a pandemic or a Texas-sized ice storm that leaves millions of people without power, we'd like to avoid a repetition. Megan McArdle of the Washington Post talks with EconTalk host Russ Roberts about the challenge of learning the right lessons from the current crisis in order to prevent the next one. McArdle argues that we frequently learn the wrong lessons from the past in trying to prevent the harm from the catastrophes that might be waiting in our future.