. But then you had
better understand the purpose you have in mind.

For more than 10 years I have been looking at how you can create a model
that can integrate other models of differing viewpoints and purposes. This
is slightly different from incorporating different view points in an
encyclopaedic sense, it means more being able to map any other view point
into or out of the integrating view point you are developing. 

OK so that may be asking a lot, but one of the things I have learnt is that
the easiest w