	Thanks for this reply. 
	&gt; &gt; 
	&gt; &gt; 	.	From it I take it that there are three kinds
	&gt; &gt; of items to consider:
	&gt; &gt; *	objects, including immaterial ones like emotions,
	&gt; &gt; sensations, opinions, knowledge, whose attributes
	&gt; &gt;  (including existence) are 4-D;
	&gt; &gt; *	relations between objects, whose attributes are 
	&gt; &gt;  also 4-D, eg. friendship; and 
	&gt; &gt; *	time histories of objects and relations, and their 
	&gt; &gt; attributes, which are 3-D (timeless