This is an active site and pages are being added as our ideas are clarified. 

The Headings are recent articles – the draw-down pages are supplementary articles written over the years.

It will be helpful to go through the site in the order of the main headings listed above - other than this, the pages can be accessed in any order

Most of these articles have been written by Barry Taylor over the last 10 years or so.

 Where the article is date-sensitive, the date of origin is given.

 Where someone else has written the article, a refence is given