entrepreneurs and politicians, have wrought. But our problems are ancient, problems of dominations, struggles, survival, values in conflict, greed and insane sadisms. To get some conceptual light on the social reality which seems immediately to be so complicated, a philosopher will need to learn from the historians of technology. A few years ago, the philosopher Elisabeth Straker concluded that "a his­ torical philosophy of technology [is required] since history - and history alone - provides all those concepts that form part of the repertoire of the philosoph­ ical analysis of technology". And she added that this goes far beyond the triviality that like other cultural achievements technology has its historical development. Now historical comprehension is no substitute for a logical methodology in the analysis of technological problems.