You can't really be sure what will cause an economic crisis. There's usually multiple factors working in a cascade, and it's only ever clear in retrospect. Even

You can't really be sure what will cause an economic crisis. There's usually multiple factors working in a cascade, and it's only ever clear in retrospect. Even then, you get disagreement. Car owners falling behind on payments in record numbers could be nothing in terms of the history of the next global economic crisis. Or it could be among the dominoes.