Karl
How about something like this.... (I took it from the old SpecGL)
As a general principle, variability complicates interoperability. In
theory, interoperability is best when there are numerous identical,
complete, correct implementations. However, in practice, the net effect of
conformance variability is not necessarily negative in all cases, when
compared to the alternatives. Different sorts of variability have different
negative and positive impacts. The principal danger is "excessive"
variability - variability which goes beyond that needed for a positive
interoperability trade-off, and which unnecessarily complicates the
conformance landscape. Specification writers need to carefully consider and
justify any conformance variability allowed, making sure it aligns with
project requirements, use cases and the technology.
--Lynne
At 04:11 PM 8/25/2004, Karl Dubost wrote:
>Dom,
>
>http://www.w3.org/QA/Group/2004/07/WD-qaframe-spec/#subdivide
>
>the introductory prose for Managing Variability is missing. I though like
>you have edited VIS, that you may be able to give a paragraph from your
>VIS text.
>
>What do you think?
>
>
>
>--
>Karl Dubost - http://www.w3.org/People/karl/
>W3C Conformance Manager
>*** Be Strict To Be Cool ***
>
>