Logic

[puppydog85]

In the course of several discussions the word illogical has been thrown around and has caused me to think that most people here don't know what "a logical argument" means.

So the poll I wanted to start would go like this.

Is this statement: A. Logical B. Illogical

All horses are pink
I have horse
Therefore my horse is pink


Courtesy of C.S. Lewis
“Logic!” said the Professor half to himself. “Why don’t they teach logic at these schools?"

[crispybits]

The conclusion is logically valid given the premises, but the premise "All horses are pink" is obviously false.

[Nendreel]

Non-pink pony. Your premise of all pink horses is therefore false.

I moslty just wanted to post a picture of ponies

[AndyDufresne]

Non-pink pony. Your premise of all pink horses is therefore false.

I moslty just wanted to post a picture of ponies

Laughing Man approved.


--Andy

[Haggis_McMutton]

[bedub1]

Is this statement: A. Logical B. Illogical

All horses are pink
I have horse
Therefore my horse is pink

All horses are pink
I have a pink animal
Therefore the animal is a horse.

[crispybits]

I call affirming the consequent! (sorry, I'm getting all technical now but I'm trying to stay in logic mode for when puppy replies to me in another thread)

[jonesthecurl]

How 'bout this one?


The universe must have been created
Only God can create.
Therefore the Bible is true.



Does that work, or might there be a flaw in the logic, the premises, or the conclusion?

[crispybits]

I think that one is very loosely described as either "begging the question" or "preaching to the choir" where I'm concerned

[nietzsche]

I don't get what OP is trying to point out?

The statement is logical. Whether the premises are true or not, that's another matter. Maybe that's what he's pointing out? Sorry I'm not following the other threads.

[Frigidus]

It is, in fact, logically valid. However, the argument is logically unsound as the premises are false.

http://www.iep.utm.edu/val-snd/

Edit: What point are you trying to make here?

[Lootifer]

He's saying that you can still be logical while having an unconfirmed premise.

Its just a pity that he used such a falsifiable premise. Not all horses are pink thus your statement is wrong.

You needed to put some pragmatic unknowns into your example. Being a helpful chap here:

All trees that fall in a forest with no conscious observers make no sound.
A tree recently fell down in my back yard and there was no conscious observers around to hear it.
Therefore it made no sound.

[puppydog85]

I just wondered how many people thought that logical= a correct argument. Not as many as I thought, but based on how many people toss around the word logical I was expecting a bit more.

[PLAYER57832]

In the course of several discussions the word illogical has been thrown around and has caused me to think that most people here don't know what "a logical argument" means.

So the poll I wanted to start would go like this.

Is this statement: A. Logical B. Illogical

All horses are pink
I have horse
Therefore my horse is pink


Courtesy of C.S. Lewis
“Logic!” said the Professor half to himself. “Why don’t they teach logic at these schools?"

It is logical, but is it true? That is a different question, entirely.

And, part of knowing if that statement is really logical is knowing if the statement is true, could be true or is plain false. Most people want to stop at the surface, when the real problem is at the far more basic level, not "is it logical", but " is what I understand true?".

[puppydog85]

Sorry player but that sounded contradictory to me. Perhaps I misunderstood.

It is logical, but is it true? That is a different question

if that statement is really logical is knowing if the statement is true

What do you mean when you say "really"?