Keen's project is not to give readers a formula for economic prediction — it is to give them a more accurate mental model of how economies actually work. The value of that model is not that it makes the future legible. It is that it makes a wider range of futures plausible, which changes how you prepare. A builder who understands that booms are debt-driven and fragile prepares differently than one who assumes that good economic periods simply continue. A young professional who understands that banks create money through lending thinks differently about their own debt than one who believes banks are simply intermediaries. Better mental models do not eliminate risk. They shift the distribution of decisions you make — toward more resilience, more realistic expectations, and more thoughtful risk-taking.