Nice article, marred by the inaccurate presentation of maternal-fetal immune reaction. Most severe allergic reactions to the child have to do with Rhesus type, not ABO type. ABO reactions are rarely serious, and could only occur in a type O mother, because it's type Os who have the anti-A and anti-B antibodies in their blood serum. Irrelevant sidenote: they made a similar mistake on 'House' recently.
Much of this discussion seems to be taking place within a somewhat naive conception of language and representation; in particular, it seems to me to be neglecting the insights that structuralism provided, overapplied though they may at some points have been. Contemporary linguistics, and much though sadly not all contemporary philosophy, recognise that language and thought operate both through the binding of words to images and then to 'things', and through distinguishing things and locating them within articulated systems. You can't have pointing, to give... (read more)