Posted by Dizredux
This is where you get into trouble at least logically.
If your premise is that "only" God can make the universe then if the universe exists, God exists then that would be a logical argument. The form here is
If P, then Q
P
Therefore Q
This is valid form.
O.K.
The key here is the term "only". A statement that used "if" in the premise, would allow other possibilities to be considered and that is what makes the argument not a logical one.
huh? First you say it is valid then you say it is invalid.
I didn't explain it well I suspect.
Your argument was
If a God can create a universe, yes, then the existence of the universe points to God.
That is a invalid logical form.
If God then universe
Universe
Therefore God
This is not a valid argument as there are other possible explanation for the existance of the universe. Basically you cannot reverse the implication of a premise and have it be valid.
Much of this thread is reaction to posters who keep trying to use this form of argument. It may sound logical but it is not at least according to the rules of formal logic. Let me give an example
All cats have tails
There exists an animal with a tail
Therefore the animal is a cat.
This is invalid because there is a possibility of other animals with tails.
If you use the term "only God" your premise rules out any other other possibility. Let me give an example on this:
Only cats have tails
There exists an animal with a tail.
Therefore the animal is a cat.
This has an incorrect premise but it is a valid argument, the one you used is not.
It is sometimes hard explaining logic to someone who has not had some kind of formal training in it. The fault lies with me for not being able to explain it well enough.
The reason that I am addressing this is that using an invalid argument only hurts what you are trying to show.
Hope this helps you understand a little.
Dizredux