Lessons Learned

RDF as a general information model is applicable to many uses (many of which we never even thought about)

Common data representation and architecture drives down (technical / social) costs

Facilitates serendipitous interoperability - breaking down the barriers of domain knowledge

When "Anyone can say anything about anything", who you trust is important

Beneficial to solving interoperability in Open (rather than Closed) systems

Closed systems are becoming more and more Open - addressing these issues now seems cost effective in long run