We are living through a “polycrisis,” writes the historian Adam Tooze. Since 2020, commentators have referred to “car crash,” “dumpster fire,” “the end of history, no really, seriously this time,” but Tooze, who began his career studying the shady economics of Nazi Germany, never loses his head particularly when so many about him are losing theirs. “A problem becomes a crisis when it challenges our ability to cope and thus threatens our identity,” Tooze writes in the Financial Times. “In the polycrisis the shocks are disparate, but they interact so that the whole is even more overwhelming than the sum...