Re: subclasses (RDF vocabulary definitions)

Richard,

I'm finding this conversation rather frustrating.  You have claimed there 
are logical flaws in RDF(S).  I'm trying to understand what you mean when 
you said:

[[<<this is true, but RDF Schema should use proper subsets instead of subsets.
Using subsets logically permits such absurdities as: the set of all men is
identical to the set of all animals.>>]]

Please explain the logical flaw.  You have explained some notation so 
far.  Fine.  Now for the flaw?

Brian