I'm not a math student, and am an English learner. So, please reply as simple as possible. Thanks. I think literacy rate of a certain country is measured by taking the percentage of all educated persons above a defined age. Suppose that the defined age is 15 years, then if the literacy rate is 90% that would mean only 10% of the persons are illiterate. Suppose, out of this 90%, almost 80% are college educated degree holders. These 80% obviously would like to do only those jobs which fit their 'academic' class. I mean they won't be willing to work at gas stations, as salesmen, etc. Then, who is going to fill these position, assuming there is no inflow of workers from other underdeveloped countries and no 'technological' replacements? How is inflation rate measured? Is it measured in reference to some 'inflation-less' rate? Likewise, how is jobless rate measured?