11.5 Explicit knowledge differs from tacit knowledge in that it is readily externalized by the experts in the form of written documents, patents, procedure manuals, test reports, and project files, whereas tacit knowledge consists of insights, intuition, heuristics, rules of thumb, and perceptions, and is not easily explained or expressed. Tacit knowledge is regarded as more valuable, as it forms the foundation for creating competitiveness in the marketplace. Under what conditions are the aggressive collection, improvement, and dissemination of explicit knowledge still useful to companies?