Would communities of practice improve IT projects?

Communities of practice share knowledge.

• Knowledge is both tacit and explicit. Why is that? Who said it? It's probably Nonaka and I can use his material to explain and give examples.
  
• Knowledge is social, not just one person's knowledge and I could find examples from the case studies I have
• Dynamic knowledge - i.e. knowledge changes with experience, including the project life cycle, so knowledge needs updating throughout a project.
• Keeping the social structures after a project finishes. But teams break up when a project finishes, so you lose, or loosen the knowledge. How can you keep those structures? Perhaps through communities of practice, perhaps through maintaining the social capital, keeping the networks going.

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NONAKA, I. (1994) A Dynamic Theory of Organizational Knowledge Creation. Organization Science, 5, 14-37.