called mereology. It seems clear that the
&gt;set/subset relation and the whole/part relation are intriguingly
&gt;similar in some ways, but also pretty clearly not the same relation,
&gt;no matter what David Lewis thinks. At any rate, one would need to
&gt;make a very strong case to say they were. If you substitute a team
&gt;member, the team has a *different* set of players, yes? If you want
&gt;to say no, then how are you going to talk about what I would call the
&gt;set of players in the team?
&gt;CP: I