 and associations with timeless 
&gt; relations. However,
&gt; &gt;I know very well how to take something from my old model and 
&gt; represent it
&gt; in
&gt; &gt;the new model, and vice-versa. 
&gt; 
&gt; GH&gt;	Matthew, I would be interested in your reasons for moving to
&gt; "timeless" relations. How do you cater for relations that start at a
&gt; particular instant, for example? Also, what about the 
&gt; distinction between a
&gt; relation that has ended, and one's memory of it? I am 
&gt; wondering w