00, Jon wrote:
&gt; 
&gt; &gt; | The most fundamental concept in cybernetics is that of &quot;difference&quot;,
&gt; &gt; | either that two things are recognisably different or that one thing
&gt; &gt; | has changed with time.
&gt; &gt; |
&gt; &gt; | Ashby, W. Ross,
&gt; &gt; |'An Introduction to Cybernetics',
&gt; &gt; | Chapman &amp; Hall, London, UK, 1956,
&gt; &gt; | Methuen &amp; Company, London, UK, 1964,
&gt; &gt; | Page 9.
&gt; &gt;
&gt; &gt; ¤~~~~~~~~~¤~~~~~~~~~¤~~~~~~~~~¤~~~~~~~~~¤~~~~~~~~~¤