While searching “tacit knowledge” via Google Scholar, I found a source, seemingly quoted very much – a guru?- that has not brought the expected transparency but more questions. Reber, Arthur S. (2003) wrote that (1) most academics talk about existing knowledge and not about the process of acquiring it (learning). Furthermore, (2) tacit knowledge is not tacit knowledge: There is implicit knowledge, abstract knowledge and tacit knowledge. Then I saw that he was mainly talking about children’s learning. Useless?
Source: Bernard J. Baars and William P. Banks and James B. Newman (2003), Essential Sources in the Scientific Study of Consciousness, MIT Press.