Knowledge is always bound to persons and validated in the context of application. A
well-known distinction in this respect is that between explicit and tacit knowledge, a
distinction first elaborated by Michael Polanyi (Skyrme, 2002). Polanyi (1966) cited
in uit Beijerse (1999, p.99) stated that “personal or tacit knowledge is extremely
important for human cognition, because people acquire knowledge by the active