τέχνη

Techne (τέχνη) derives from the Proto-Indo-European root teks- (to weave, fabricate, or construct — the same root as in Latin texere, to weave, and English 'text,' which originally meant a woven thing). In Classical Greek, techne named the practical knowledge of how to make something — the carpenter's knowledge of how to make furniture, the physician's knowledge of how to treat disease, the poet's knowledge of how to compose verse. What distinguishes techne from mere habit or routine is that it is rational: the technites (craftsman) knows not only what to do but why, can explain the principles underlying the practice, and can teach the skill to others. This rational articulability is what separates techne from mere experience (empeiria) — the empirically successful practitioner who cannot explain why their methods work lacks techne in the full sense.

Plato treated techne with considerable philosophical ambivalence. On one hand, he used techne as a model of genuine knowledge: the craftsman's knowledge of how to make a shoe is real and expressible, unlike the softer, more impressionistic claims of poets and politicians. The Socratic dialogues repeatedly invoke the craftsman's techne as what ethical knowledge should look like — systematic, teachable, rationally justifiable. On the other hand, Plato was deeply suspicious of certain techne practitioners, particularly the sophists (who claimed a techne of persuasion) and the poets (who produced beautiful things without understanding). The Republic's famous critique of poetry is partly a critique of techne that creates images without knowledge of the original — mimetic techne at two removes from truth.

Aristotle provided the most systematic ancient analysis of techne in the Nicomachean Ethics, where he distinguishes it as one of the five intellectual virtues (alongside episteme, nous, sophia, and phronesis). Techne is the intellectual virtue concerned with making (poiesis) rather than doing (praxis) — its goal is a product external to the activity itself. This means that techne is always means-oriented in a way that praxis is not: the carpenter's techne is for the sake of the furniture, and the quality of the techne is judged by the quality of the furniture produced. The techne of medicine is for the sake of health; the techne of navigation is for the sake of the safe voyage. The carpenter is complete when the chair is complete; the practically wise person is complete when their life is well-lived.

The philosophical history of techne merged with the history of the arts (artes in Latin, which translated techne) and ultimately generated the modern concept of technology. The Greek term entered English through the Latin technicus and French technique in the 17th–18th centuries, initially naming craft skill; with the Industrial Revolution, the related term 'technology' (techne + logos: the rational account of craft) came to name systematic machine-based production. Martin Heidegger's famous essay 'The Question Concerning Technology' (1954) argued that modern technology represents a fundamental transformation of the ancient Greek techne: whereas the Greek craftsman disclosed the possibilities of materials through a kind of receptive bringing-forth (poiesis), modern technology imposes its own framework on nature through a 'challenging-forth' that treats nature as a standing reserve of resources to be exploited. The essay made techne a key term in philosophy of technology.