Brian Withnell
Puritan Board Junior
If you remove a little of the peel from an orange, it is no longer the same orange, but a different one. The part you removed (the portion of the peel) is either an orange or not an orange, depending on the definition of an orange.
I'm trying to think in what system of logic you are operating. Only a mathematical definition of identity would lead to the conclusion that if a quality (size, shape, location, color, etc.) changes then the object is no longer the same object. I think almost all philosophers since Aristotle have worked with some concept of substance and accidence, in which the change of an accident (perceivable quality) does not affect the underlying substance. Ask them to explain what substance is, and watch the veins pulse.
I think a better answer to the question would be in the realm of analytic philosophy, in which we realize that all definitions are fuzzy. Since words can only be defined by other words, nothing can ever be defined with 100% referential accuracy. For example, can one really distinguish exactly between a string, a cord, and a rope; or between big, huge, and enormous?
You are talking to Brian, husband of Jean, teacher of mathematics. Of course I deal with things mathematically. Philosophy without mathematics is a waste of time. If you don't have the axioms, undefined terms and definitions for a system, you have no logic. I do accept what undefined terms are, but then one has to enumerate the undefined terms ... if "substance" is one of those undefined terms, then a description (not definition) is needed to tell when two things are not the same substance. If you cannot tell when an isometry exists between two things, then it makes no sense in saying the objects are the same substance unless they are the same object without transformation.
Fuzzy philosophy is just an excuse for not stating what the presumptions are. I think of it as either a lack of thorough thought. While it could be that someone hides the axioms of a system because they know those axioms are evil, I tend to think it more the former, though I could easily be convinced some hide the axioms because they know the evil they promulgate (think evolutionist here).
Have pity on my poor wife Jean ... she hit the nail on the head in her reply.

