Breakdown (Heidegger)

Breakdown is Heidegger's term for the transition from absorbed engagement with equipment to conscious inspection of that equipment. When the hammer works, the carpenter uses it without attending to it. When the hammer breaks, the carpenter must suddenly look at the hammer, see it as a thing with weight and material and condition, examine whether this hammer is adequate for this task. The breakdown is not a failure of the practice but a constitutive feature of it—the mechanism through which practitioners come to understand what their tools are and what the tools have been doing to their work. Dreyfus used the concept to analyze the specific philosophical value of AI failure, arguing that hallucinations and errors are not bugs but phenomenologically essential moments of disclosure.