Can we know that something doesn't exist?

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ughaibu
 
Reply Fri 5 Mar, 2010 05:25 pm
@kennethamy,
kennethamy;136649 wrote:
That it must be that what is actual is possible is a theorem in modal logic. So it can be proved. But, isn't it intuitively obvious? It is not because I believe it that I believe it is true. It is because I believe it is true, that I believe it.
How is this meant to demonstrate the physical impossibility that you've claimed re. Luxembourg and China?
 
kennethamy
 
Reply Fri 5 Mar, 2010 05:45 pm
@ughaibu,
ughaibu;136652 wrote:
How is this meant to demonstrate the physical impossibility that you've claimed re. Luxembourg and China?


It isn't. What what shows that is our knowledge of the comparable military forces of the two countries, and other assumptions about the ability of a country with no military force to win a war against one with enormous forces. (Only in philosophy would anyone think that whether it is a real possibility that Luxembourg could win a war against China is something that is disputable. It is important to take note of that. It is as if we are on a different planet).
 
ughaibu
 
Reply Fri 5 Mar, 2010 05:51 pm
@kennethamy,
kennethamy;136658 wrote:
Only in philosophy would anyone think that whether it is a real possibility that Luxembourg could win a war against China is something that is disputable. It is important to take note of that. It is as if we are on a different planet.
This is called hand waving. Are you seriously maintaining that it is physically impossible for Luxembourg to win a war with China? If so, other than your belief and incredulity, do you have an argument?
 
SammDickens
 
Reply Fri 5 Mar, 2010 07:09 pm
@hue-man,
What is existence? Is it physical reality alone? Then does the mind exist other than as a function of the brain? Does the soul exist other than the character and values exhibited by a person? Does love exist, or freedom, other than as passing ideas pondered by the brain? Are all intangible entities mere phantoms contingent upon the physical? Is matter and energy adequate to explain human existence, existence as a whole? Matter is substantial, it has mass and occupies space, but it is made of energy that is insubstantial, has no mass, and does not occupy space. At what point does energy, as it becomes matter, also become substantial, massive, and extensive in space?

Samm
 
kennethamy
 
Reply Fri 5 Mar, 2010 07:20 pm
@ughaibu,
ughaibu;136664 wrote:
This is called hand waving. Are you seriously maintaining that it is physically impossible for Luxembourg to win a war with China? If so, other than your belief and incredulity, do you have an argument?


Yes. the argument is the one I have already given a number of times.

It is physically impossible for a country with no military forces to win a war against a country with enormous military forces. Luxembourg is a country with no military forces, and China is a country with enormous military forces. I think I will let you draw the conclusion from the two premises.

---------- Post added 03-05-2010 at 08:22 PM ----------

Samm;136722 wrote:
What is existence? Is it physical reality alone?
Samm


No, I think that the number three exists, and the number three is not a physical entity.
 
Fil Albuquerque
 
Reply Fri 5 Mar, 2010 07:27 pm
@kennethamy,
kennethamy;136658 wrote:
It isn't. What what shows that is our knowledge of the comparable military forces of the two countries, and other assumptions about the ability of a country with no military force to win a war against one with enormous forces. (Only in philosophy would anyone think that whether it is a real possibility that Luxembourg could win a war against China is something that is disputable. It is important to take note of that. It is as if we are on a different planet).
 
Zetherin
 
Reply Fri 5 Mar, 2010 07:42 pm
@hue-man,
kennethamy wrote:
(Only in philosophy would anyone think that whether it is a real possibility that Luxembourg could win a war against China is something that is disputable. It is important to take note of that. It is as if we are on a different planet).


Sorry to interject, but I quite literally broke out laughing. You're right.

The only thing I can think of is that they have a different understanding of "physical impossibility". Perhaps, for instance, they think you're saying that it is violating a law of nature?
 
kennethamy
 
Reply Fri 5 Mar, 2010 07:48 pm
@Zetherin,
Zetherin;136738 wrote:
Sorry to interject, but I quite literally broke out laughing. You're right.

The only thing I can think of is that they have a different understanding of "physical impossibility". Perhaps, for instance, they think you're saying that it is violating a law of nature?


Well it is: or rather violating a complicated series of natural laws.

---------- Post added 03-05-2010 at 08:49 PM ----------

Fil. Albuquerque;136733 wrote:


What a disappointment!
 
Fil Albuquerque
 
Reply Fri 5 Mar, 2010 07:50 pm
@Zetherin,
Zetherin;136738 wrote:
Sorry to interject, but I quite literally broke out laughing. You're right.

The only thing I can think of is that they have a different understanding of "physical impossibility". Perhaps, for instance, they think you're saying that it is violating a law of nature?
 
kennethamy
 
Reply Fri 5 Mar, 2010 07:51 pm
@Zetherin,
Zetherin;136738 wrote:
Sorry to interject, but I quite literally broke out laughing. You're right.

The only thing I can think of is that they have a different understanding of "physical impossibility". Perhaps, for instance, they think you're saying that it is violating a law of nature?


All of them know that it would be impossible for L to win against C. They just are in the grip of a theory. And in the grip of empty skepticism.
 
Fil Albuquerque
 
Reply Fri 5 Mar, 2010 07:54 pm
@kennethamy,
kennethamy;136746 wrote:
All of them know that it would be impossible for L to win against C. They just are in the grip of a theory. And in the grip of empty skepticism.


Go Zen kenneth, you are to loud, to big...just like China...
 
kennethamy
 
Reply Fri 5 Mar, 2010 07:59 pm
@Fil Albuquerque,
Fil. Albuquerque;136747 wrote:
Go Zen kenneth, you are to loud, to big...just like China...


And tell the truth, too. And give reasons too. That's unforgivable. And make you think. And thinking is so difficult. Again, unforgivable.
 
Fil Albuquerque
 
Reply Fri 5 Mar, 2010 08:03 pm
@kennethamy,
kennethamy;136748 wrote:
And tell the truth, too. And give reasons too. That's unforgivable. And make you think. And thinking is so difficult. Again, unforgivable.


INVISIBILITY should be enough answer to you... but I could give you 10 more reasons...
 
kennethamy
 
Reply Fri 5 Mar, 2010 08:09 pm
@Fil Albuquerque,
Fil. Albuquerque;136750 wrote:
INVISIBILITY should be enough answer to you... but I could give you 10 more reasons...


So hard to think. And so pointless when you can write nonsense.
 
Fil Albuquerque
 
Reply Fri 5 Mar, 2010 08:11 pm
@kennethamy,
kennethamy;136752 wrote:
So hard to think. And so pointless when you can write nonsense.


Ok Ok... see you later, have fun ! Very Happy
 
Zetherin
 
Reply Fri 5 Mar, 2010 08:12 pm
@hue-man,
kenenthamy wrote:
Well it is: or rather violating a complicated series of natural laws.


I don't know if it is violating any natural laws, but it is impossible for L to beat C if L has no army. Their position, I think, is to think up fictitious scenarios in order for L to win. Even one that is aptly dubbed "INVISIBILITY". Which I guess means that, predator-style, a Luxembourgian would go invisible and then slay all the Chinamen.
 
Fil Albuquerque
 
Reply Fri 5 Mar, 2010 08:13 pm
@Fil Albuquerque,


---------- Post added 03-05-2010 at 09:14 PM ----------

Zetherin;136754 wrote:
I don't know if it is violating any natural laws, but it is impossible for L to beat C if L has no army. Their position, I think, is to think up fictitious scenarios in order for L to win. Even one that is aptly dubbed "INVISIBILITY". Which I guess means that, predator-style, a Luxembourgian would go invisible and then slay all the Chinamen.


Oh my !... and you can read my mind so well ! Laughing
 
kennethamy
 
Reply Fri 5 Mar, 2010 08:15 pm
@Zetherin,
Zetherin;136754 wrote:
I don't know if it is violating any natural laws, but it is impossible for L to beat C if L has no army. Their position, I think, is to think up fictitious scenarios in order for L to win. Even one that is aptly dubbed "INVISIBILITY". Which I guess means that, predator-style, a Luxembourgian would go invisible and then slay all the Chinamen.


Ultimately all physical truth is the product of the laws of nature and the initial conditions. Of course, the process is impossibly long and complex, and is a practical impossiblity to explain.
 
Fil Albuquerque
 
Reply Fri 5 Mar, 2010 08:17 pm
@kennethamy,
kennethamy;136757 wrote:
Ultimately all physical truth is the product of the laws of nature and the initial conditions. Of course, the process is impossibly long and complex, and is a practical impossiblity to explain.
 
kennethamy
 
Reply Fri 5 Mar, 2010 08:19 pm
@Fil Albuquerque,
Fil. Albuquerque;136760 wrote:


Yes, it is just vague enough to appeal to you. I was hesitant in posting that for just that reason. Unfortunately, it is also true.
 
 

 
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