----
ken, that's a premise or axiom that simply cannot be proved anyway. the question is: regardless of whether a fetus is a person or not, are they represented in the conversation. of course they are! does everyone have to part of the conversation? of course not be/c that would be impossible anyway.
Habermas is more interested in the _foundations_ of rationality and discourse ethics in the minimal _conditions_ that even bring people to attempt to communicate with one another in the first place.
his question is _could_ everyone be represented at the table (in theory), not ARE they.