Abstract
In this chapter the author argues that modern technology rests on the axiom formulated by Giambattista Vico, the famous verum ipsum factum, verum factum convertuntur – we only understand that which we do or realize, or only fully understand all that we do or realize, to the precise extent that we actually do it or realize it. This is a reason-based concept, in the tradition of which we find thinkers such as Vico, Marx, Dewey and Bachelard, asserting the epistemic value of the maker’s knowledge. In this text, Hermínio Martins searches for the epistemological foundations of technical reason, arguing that in the age of cybernetic technologies and bio-engineering, the human being has become the “god of artefacts”.