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Re: "more evolved" (wasThe Summers Theory)

In a message dated 97-07-06 03:02:46 EDT, u199873203@abonados.cplus.es
(Ernesto) writes:

<< More evolved = more derived = more changed. An ancestor is, obviously,
 evolved than its descendant species. So, a descendant is more evolved than
 its ancestor, and it's also more evolved than other descendant which closely
 resembles the common ancestor. >>

This concept hangs too much on the term "closely resembles." Closely
resembles? Exactly what kind of resemblance? Can "resemblance" be quantified
or measured? Suppose the "resemblance" is due to convergence or homoplasy.
What then?