> Andrew Ho <[EMAIL PROTECTED]> wrote:
>   My guess is that the "closed reference group" approach failed
> because it
> takes too much work to introduce change into the ontology/vocabulary.
> It
> is not just "paying to join" - but paying (monetary + non-monetary
> cost)
> every time you need to change anything or add anything into the
> standard.

Yes, all the overheads for teh OMG and HL7 standards are too high. openEHR 
promises a means for low-overhead specialisation of Archetypes, while retaining 
an orderly development of a common Reference Object Model and core set of 
Archetypes.

> We don't have to design the social-contract network as part of the
> information system project. We just have to be able to support it.

I couldn't agree less. The social-contract network is the main game. The 
technology (of Archetype Models) is secondary (but still important). The whole 
open source software movement has flourished due to teh establishment of a firm 
social contract network, not because of any particular tools or technology. We 
need the equivalent for knowledge (terminologies, ontologies, archetypes, 
reference models).

Tim C

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