"Knowledge Management professionals acknowledge that the two main types of knowledge are tacit and explicit. The differences between the two are vast, yet only one is the most important: tacit. Despite the fact that many Knowledge Management (KM) researchers believe that around 80% of organizational knowledge consists of tacit knowledge, there are far more KM tools available for capturing explicit knowledge. Why is this?"
Via Brad Abbott, David Hain, ThePinkSalmon, MyKLogica, juandoming, Gust MEES