The problems with the mechanistic Keynesian approach are: (a) it relies on a model that is not a complete model of the economy, particularly with respect to the monetary and financial sector.

• 凯恩斯机械方法的问题在于：第一，特别是考虑到货币部门和财政部门以后，凯恩斯方法依赖的模型并不完美。