As he explained in his #1 New York Times Bestseller, Principles: Life & Work, Dalio believes that most everything happens over and over again through time so that by studying their patterns one can understand the cause-effect relationships behind them and develop principles for dealing with them well. In this 3-part research series, he does that for big debt crises and shares his template in the hopes reducing the chances of big debt crises happening and helping them be better managed in the future.