This encyclopedia is not just one of those so-called books on such,but the outcome of author’s own experience within 30 years of economic and emerging careers.. The author assimilates a job to a tree and then the relationship between the tree parts root,trunk,and branches,and let the reader know how knowledge is tuned into skill,and becomes value-added and its role in the launching and running of an economic activity .. He takes the reader’s hand and acquainting the way in which the work gets completed in details,and progress towards success as well as morality and invites him to choose honesty as the first lesson in the school of knowledge ..

Seyed Mohammad Deylami,is an Iranian economy activist and inventor ..he entered to the industry and economy world by the invention of a new crain for construction and it brought a major evolution in construction of Iran.. This beginning was coincided with revolution 1979 and made him curious about the economy in the revolution and economy in the war..these years Mr Deylami is trying to write down his experiences to share with younger people who like seek successes . .