比如，可以想象美联储采取“优化控制”方法，货币政策的制定建立在多重宏观经济模型仿真的基础上。 这些模型采用不同的利率和资产负债表工具组合，预测未来通胀和失业。
One can imagine, for example, the Fed adopting an “optimal control” method, whereby monetary-policy settings are established by running multiple simulations of a macroeconomic model using different combinations of interest rates and balance-sheet tools to project future inflation and unemployment.