marg wrote:Tarski wrote:marg wrote:JAK had mentioned the entire argument assumes God.
Well, he is quite worng about that. The problem does not lie with an inappropriate assuming of the existence of God either in the usual meaning (whatever that may be) or in some meaning connected with Godel's technical definition.
Well at this point Tarski I think
you are wrong. I'm going to quote from the course I mentioned I have been listening to..the one by Prof J. Hall..Philosophy of Religion.
"There are certain sentences, predicative sentences “All swans are either white or black, all humans are moral etc. where in order to figure out whether the predication is being made, predication of mortality to humans, predication of white and black to swans, in order to figure that out involves field work. The proposition puts together or synthesizes new information. Proposition says more than what it included in the very def’n of it’s subject term.
Being either white or black, being mortal is not part of the def’n of swan, the def’n of human being necessarily.
Suppose I said a bachelor is an unmarried male of marriageable age or all bachelors are unmarried. Well if def’n of bachelor is unmarried male of marriable age, then the statement all bachelors are unmarried is analytic. That is you may discover the truth of the predicate by simple analysis of the meaning of the subject.
Analytic you can discover the truth by analysis alone.
So far there isn't much to disagree with here even if it is a bit simplistic.
Consensus in 20th century is that any statement that can be known a priori, independent of experience must've necessity be analytic.
Lets grant that is true in some appropriate sense. Then what? Does experience with the universe of possible analytic statement count as experience? LOL
That is we must be able to discover its truth by analysis of the subject term.
THE subject term?
Now see a bit of a problem. There may be hundreds of subject terms in the background of an analytic argument. The network of defintions may span a library full of usefull definitions about number, set, class, functions etc.
To say that when, by a long analysis than may span decades and involve the best minds of logic and math we end up with no new information is quite absurd. if you are representing him correctly, Prof J. Hall just fails to understand how much goes on in an exact science such as mathematics. Some have even argued that because we must explore the analytic world we are really doing something broadly empirical! We do fieldswork in the abstract world as it were!
That any statement that is synthetic, any statement that delivers new information is of necessity a posteriori.
Except that what we might be exploring when we gain experience is the universe of anylytic truths that extend far beyond our ken.
It’s going to use reason with the fuel working with raw material provided by experience.
Does expereince with analytic entities such as number count as experience. If I had Prof. Hall in my office I would ask him this.
Point: If the ontological argument is a priori and if truth of conclusion is discovered by analysis of what is contained in subject term alone, what we have here is a circular or question begging argument. It presumes the very thing it sets out to prove."
Again, this only seems to apply to the simplest and most trivial of syllogisms where there may only be one subject and even Dr. Hill can determine if the statement is true analytically. But what if he can't? What if the best minds can't and yet want to know badly?
If they ever find out will we say they have discovered no new truth but only trivial tautology?
Picture this: Numbers can be defined analytically.
Now Fermat's last theorem is a statment about numbers that is quite simple to state. Yet, it took 200 years of complex hard work in advanced mathematics before it was proven to be true. Before that, we didn't know. Now we do know! Are you telling me, is Mr. Hall telling me, that we have gain
no new information??????
That's absurd.
I am afraid that a deeper knowledge of mathematics (the premier analytic discipline) would do Dr. Hall some good (unless you are just misrepresenting him).
Those of us in mathematics and similar subjects are continually having to combat such simplistic thinking coming from Professors outside the field such as those in the English departments or even those in the philosophy department who do not specialize in logic or who do not know any deep mathematics.
previously: Does math always allow for the nul or the non existence of things? Is it possible that conceptually the same problem doesn't exist for numbers as for conceptual things?
What I am saying Tarski is numbers don't care whether things exist or not. But sentences with subject and predicate assume the subject exists conceptually.
You are equivocating between
exists and
exists conceptually I guess.
What do make of this sentence.
"Round squares do not exist"
or
"A a final prime does not exist".
In what sense do we assume that a "final prime" exists just because it is the subject of a sentence???
Tricky question rigth?
Correct math can address the empty set but that wasn't an option given in the def'n by Godel, no empty set was allowed as part of the def'n, to replace the God in God-like..
??
Too conceptually muddled to even comment on.
By the way, if history had been just a bit different we might be calling this the "vacuous set" instead of the "empty set". Then we would have to say that the vacuous set exists. I'm am sure that would irk you to no end.
Why would I be irked? I don't understand your point.
I guess I shouldn't be surprised.
Let's answer just this one question:
Did humanity gain new information when Andrew Wiles et. al. proved Fermat's famous last theorem in the 1990s?? Was a discovery made and did science progress?
Yes or no? Recall that we wanted to know whether it was true or not and have struggled to find out for 200 years!!
Ask the same question of Prof. Hill if you can.
Note that the theorem of Fermat is but one example. many more theorems took a long time and
many are used in physics!!
Also, note that Hill's opinion is in direct and violent opposition to Godel himself and also to many other great thinkers such as Penrose.
Here is another example for you (and Prof. Hall).
The Mandelbrot set is a completely analytically defined mathematical object. Yet we are continually exploring it and are profoundly surprised by what it has to offer. Exploring it is like exploring a galaxy.
Read up on the Mandelbrot set and tell me if you think that there can be
no new information discovered about this purely analytic object???
It has been suggested by some thinkers that the entire universe is ultimately mathematical in nature-- a vast tautology to an omniscient being (who does't exist anyway).
it is also true that we sometimes use computers to do
experimental mathematics and sometimes thereby learn of analytic truths which e then try to prove by purely deductive means! What do you and Mr. Hill have to say about that?
You sure put a lot of stock in this one course.
when believers want to give their claims more weight, they dress these claims up in scientific terms. When believers want to belittle atheism or secular humanism, they call it a "religion". -Beastie
yesterday's Mormon doctrine is today's Mormon folklore.-Buffalo