In its simplest form, convergence thesis predicts that per capita income and productivity of work force is going to be converged among different countries. However, it does not come true in reality as the world's economy is getting multi – polarized rather than converging. Therefore, the Simple convergence thesis has modified to conditional convergence thesis and changed to a kind of economic growth theory. This paper suggests all the countries meet with two convergences: convergences of developed (Rich) countries and developing (Poor) countries. Iran's economy seems to be converged to developing (poor) countries. Although, the gap between per capita incomes got increased through ١٩٧٥ – ٢٠٠٢, but through last decade of ٢٧ years of study, it got to decrease. To converge to developed (rich) countries, Iran should improve its social technological potentials.
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