So u do understand theoritically so good but practically,Money has value only if used otherwise it is just paper better still tissue paper as inflation will eat into it so use it ,can u tell me y in many countries the rates of indian currency r one to hundreds in fact 1dollar =60 rs so practically we r 60 times less productive or 1/60 productive (too much of indian paper floating around without being put to good use so no value),Infact sum of our productivity is our GDP or value of that paper not what color of paper v hold as currency