 specification may be developed for members of 
&gt; particular classes.
&gt; &gt; &gt; &gt; &gt;
&gt; &gt; &gt; &gt; &gt; MW: The advantage of this approach is that different world
&gt; &gt; &gt; &gt; &gt; viewpoints are
&gt; &gt; &gt; &gt; &gt; respected and kept separate, whilst we learn explicitly of
&gt; &gt; &gt; &gt; &gt; the relationship
&gt; &gt; &gt; &gt; &gt; between them, and we have a basis for challenging the 
&gt; utility and
&gt; &gt; &gt; &gt; &gt; completeness of particular world viewpoint