23. Solow模型
P1:经济学家认为additional input 是经济增长的主要资源,此观点在尝试中被否定
employ more factors of production or increase the productivity of such factors --> supply more goods+ services
Economists :additional inputs is the main source of economic growth
But: gauge the additional inputs contradicted this view
P2:经济增长的第三变量
M.:economy's growth = inputs of 1.capital and 2.labor (3.variable factor productivity)
Most economists :third variable --> technological change
--> scientific +engineering research and development
But : other elements :more resource allocation + economies of scale (+ social educational factors)
P3:Solow模型研究的成果
original formation: 3 variables are independent --> capital does not affect the productivity rate
85% eco growth <-- productivity increase or technological change
P4:之前的类似研究
eariler similar technique <-- 15% use of more inputs