The development and progress of artificial intelligence(AI)technology has a profound impact on economy and society.As a new general-purpose technology,AI has replaced a number of existing jobs,which has a negative impact on labor market and incomes.On the other hand,it has also created some new employment opportunities and increased productivity in some sectors.Through studying historical experience and country comparison,this article finds that since the beginning of the information technology revolution in the 1940s,technological progress has had a more significant role in the expansion of global income inequality,and it shows a more obvious country difference.By analyzing the main mechanism of AI technological progress affecting income inequality,this article finds that the substitution effect of AI on labor force occupies a dominant position,and,together with other effects,it expands income inequality and leads to social inequality.This article further discusses public policy options to deal with the impact of AI,and proposes that promoting equal opportunity should be the main means to promote social equity.
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