This article discusses three related aspects of know-how: skill, transversal abilities and project management abilities, which are often not distinguished within either the educational or the philosophical literature. Skill or the ability to perform tasks is distinguished from possession of technique which is a necessary but not sufficient condition for possession of a skill. The exercise of skill, contrary to much opinion, usually involves character aspects of agency. Skills usually have a social dimension and are subject to normative appraisal. Transversal (...) abilities rely on but are not reducible to the exercise of skill, but require a further degree of attention and seriousness in their exercise. Transversal abilities can be displayed in different ways using different skills, depending on context. They include: planning, communicating, evaluating—all important features of successful professional action. Project management or the putting into effect of relatively long-term sequences of action involves the articulation of different transversal abilities. It is a form of agency which is considered to be important in some European vocational and professional education systems and usually involves a strong social dimension. The article concludes with a discussion of the educational implications of these distinctions and of their interrelationships. (shrink)