Can Parent and Daughter co-exist?

[JoatSimeon at aol.com]

>petegray at btinternet.com writes:

<< His argument might show "the parent is the daughter in the same place" but
it can't show what happens if daughter leaves home. >>

-- if one branch moves off, and another stays in the same geographical
location, you get two daughters, not a daughter and a parent.

Italian and Catalan would be examples of this; Italian developed out of Latin
on its own original turf, and Catalan on foreign territory.