With the
resurgence of Keynesian economic policy as a response to the current crisis,
echoes of past debates are being heard—in particular the debate from the 1930s
between John Maynard Keynes and Friedrich Hayek. Keynes talked about the
“capital stock” of the economy. He argued that by stimulating spending on
outputs (consumption goods and services), one can increase productive
investment to meet that spending, thus adding to the capital stock and
increasing employment.
Hayek accused
Keynes of insufficient attention to the nature of capital in production. (By
“capital” I mean the physical production structure of the economy, including
machinery, buildings, raw materials, and human capital—skills). Hayek pointed
out that capital investment does not simply add to production in a general way
but rather is embodied in concrete capital items. That is, the productive
capital of the economy is not simply an amorphous “stock” of generalized
production power; it is an intricate structure of specific interrelated
complementary components. Stimulating spending and investment, then, amounts to
stimulating specific sections and components of this intricate structure.

















