Comment on Acemoglu “Labor- and Capital-augmenting technical change”

Li, Defu and Bental, Benjamin and Tang, Xuemei (2024): Comment on Acemoglu “Labor- and Capital-augmenting technical change”.

Abstract

Acemoglu’s (2003) paper “Labor- and Capital-augmenting Technical Change” is a pioneering work that introduces a growth model with an endogenous direction of technical progress including microfoundations. At the steady-state equilibrium, the model indicates that there is only net labor-augmenting technical change, despite firms being able to pursue both labor- and capital-augmenting technological improvements. While this paper is a classic and original contribution to the field, it presents several significant shortcomings: (1) substantial mathematical errors in the proof of the main propositions; (2) the absence of a dynamic adjustment function for scientists across different innovation sectors, which is critical for the model; (3) neglect of the crucial condition required for the propositions to hold; (4) omission of important policy implications that diverge from existing literature; and (5) insufficient explanation of the intuition behind the model’s core conclusions. This comment identifies and addresses these shortcomings.

• Item Type: MPRA Paper
• Language: English
• Keywords: Acemoglu， Endogenous technical change， Direction of technical change， Balanced Growth Path, Relative income share of factors， Dynamic system
• Subjects: E - Macroeconomics and Monetary Economics > E2 - Consumption, Saving, Production, Investment, Labor Markets, and Informal Economy > E25 - Aggregate Factor Income Distribution; O - Economic Development, Innovation, Technological Change, and Growth > O1 - Economic Development > O14 - Industrialization ; Manufacturing and Service Industries ; Choice of Technology; O - Economic Development, Innovation, Technological Change, and Growth > O3 - Innovation ; Research and Development ; Technological Change ; Intellectual Property Rights > O31 - Innovation and Invention: Processes and Incentives; O - Economic Development, Innovation, Technological Change, and Growth > O3 - Innovation ; Research and Development ; Technological Change ; Intellectual Property Rights > O33 - Technological Change: Choices and Consequences ; Diffusion Processes

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