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Subject: Comments on Visibility

For the three discovery patterns (simple, complex, mediated), consider expanding the phone book example.  
- You have simple discovery with a personal phone book where you keep contact information you have become aware of and feel is important.
- A project or business unit often has a contact sheet of project participants/unit members for a limited but nontrivial number of individuals -- akin to the complex discovery
- A large and more disconnected population (ranging from a large company to a city) refers to contact information in a central directory -- the mediated case

I think this also works for a service population and indicates that you may always have all three levels because they address different purposes.  Moreover, the benefits of the mediated approach "typically far outweigh[ing] the management issues" may depends on the number of services and the needs being addressed.

Also, when talking about metadata, there may be a standard vocabulary or a mediated interaction among known metadata vocabularies.


Ken Laskey
MITRE Corporation, M/S H305     phone:  703-983-7934
7515 Colshire Drive                        fax:        703-983-1379
McLean VA 22102-7508

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