methods based on false assumptions is one of the primary sources of dominance of fraud and corruption in prevailing interest driven economic system. ,use of ree floats as unit of account of value is justified on ground of its being currency. essential requirement for accounting unit being defined and highly stable unit of value is simply neglected on basis of accounting principle that assumes that value of money is sufficiently stable. while in reality change in value of fiat money is often too big to be neglected and in case span of transaction is long such as 5 or 50 years it may exceed even 90%. as a consequence the error in accounting leads to absurdities and gross injustice. may refer to my research paper recently uploaded on research gate.