(I guess this is one of these things which is perennial. I have not studied much of the history of philosophy but I do find one needs to be prepared to jump in in order to keep the course of what I otherwise regard as engineering still on track... as I have said before, this is philosophical engineering we are doing...) The point which David Booth has brought up, not for the first time, and which Pat has expounded very well, that no symbol can ever have completely unambiguous meaning is, yes,...