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When I say that + does not "essentially" mean anything, I am contending that + is an arbitrary sign. It works for the same reason that the term "cat" works. A certain speech community agrees on the use and "meaning" of a particular sign. But the community could just as well have chosen another symbol to represent addition or the creature we call a "cat".
I hope this post cleared things up for you.
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:No, not really. If the above is all you are getting at, while I understand the concept (hell, a cat could understand the concept), I can't understand why a fellow human would spend one iota of precious life stuff expressing such a self evident thing.:
That is just the problem. What is "self-evident" to some persons is not "self-evident" to others. And evidently (pun intended), the concept of arbitrariness in mathematics or language was not so self-evident to you earlier, or you would not have insisted that 2 + 2 = 4 is self-evident or in some way certain in an absolute sense. For we can never prove beyond a shadow of a doubt that 2 + 2 = 4. We can only rightly believe that such is the case.
:DO NOT, for Gods sake (if he exist), go into teaching. I'm totally serious here. You have to know that you don't have anything to offer in the way of instruction to others. Sure, you are a veritable library of quotes, but then again, so are libraries. Impressionable students won't waste time thinking a library is anything more than a tool.:
I think it is very difficult for you to know what I have or do not have to offer in the way of instruction from a brief discussion on an ex-JW medium of communication. In fact, I am going into teaching. I have my own ideas and I am always developing my own theories further. But my personal ideas are not what is at issue now. I am trying to make the point--not prove--that we cannot "prove" anything, and that secondly, the term "self-evident" is deceptive as even my adversary Aquinas noted.
Duns the Scot