Instrumental Reason and the Dialectic of Enlightenment

Why the reason that promised to free humanity from myth turned, on Adorno and Horkheimer's account, into a tool of domination over nature, society, and the self.

Definition

Instrumental reason is rationality reduced to the efficient calculation of means toward given ends, indifferent to the ends themselves. The dialectic of enlightenment is the thesis that the progressive demythologisation of the world, by enthroning this instrumental reason, turns against human freedom.

Scope

This topic covers the central philosophical argument of the Frankfurt School's critique of reason: the concept of instrumental reason and the dialectic by which enlightenment reverts to myth and domination. It does not cover the culture-industry application of that argument, treated separately.

Core questions

• How can reason that liberates also dominate?
• What is lost when rationality becomes purely instrumental?
• Is there a way out of the dialectic, or only its diagnosis?

Key theories

Enlightenment reverts to myth

Adorno and Horkheimer argued that the drive to master nature through calculative reason becomes a new form of domination, so that enlightenment turns into its opposite.

The eclipse of reason

Horkheimer charted the decline of substantive, objective reason into a merely subjective, instrumental faculty serving self-preservation.

History

The argument was forged in wartime exile, as Adorno and Horkheimer sought to explain how the most rationalised civilisation had produced barbarism. Horkheimer's Eclipse of Reason restated the case in lecture form, while Adorno's later Negative Dialectics radicalised the refusal to let thought congeal into dominating identity.

Debates

Totalising critique versus self-refutation

If all reason is implicated in domination, critics ask, on what rational ground can the critique itself stand? Adorno's negative dialectics is one attempt to answer.

Key figures

• Theodor Adorno
• Max Horkheimer

Seminal works

• horkheimeradorno2002
• horkheimer1947
• adorno1973

Frequently asked questions

What does dialectic of enlightenment mean in one sentence?

That the very reason meant to free humanity from myth and fear can, by becoming purely instrumental, turn into a new source of domination.