B.History teaches us over and over again the importance of learning from the failures of the past,and the unsuccessful story of the introduction of a paper-based monetary system in the early decades of the Ming era is no exeption.
C.The key to successful control of a state is convincing people to believe in something unreliable,as demonstrated both by the story of Peter Pan and by the paper currency of the Ming dynasty.
E.While the Ming attempt to create paper money ended in failure,the fact that modern financial systems are built on paper currency highlights the historical importance of the early experiments in China.