ts as having
&gt;different characteristics, the car's engine and bodywork are different
&gt;kinds
&gt;of things. More importantly the part relation is transitive, but part of
&gt;collection seems not to be. My hand is not a member of the football team in
&gt;a way in which I am.
&gt;For the record, I am attracted to using either 1 or 2 as the situation
&gt;demands it - both seem to me to be useful, and used. 3 seems unattractive
&gt;to
&gt;me because it seems to buy you some local simplicity at the cost a
&