Ok boys and girls...give me an absolute truth.
- Thread starter OliverJ
- Start date
Enigma'07 said:I have no clue what you are talking about.What level of math?
It's just basic logic. I'll try and walk you through it.
So we start out with our statement, A or ~A.
For this statement to be true, either A or not A must be true, which is just how the logical or operator works.
So to create a truth table we generate a table with all the possible truth values for our variables. Since we only have one and our we have binary truths, we only have 2 values (true and false).
So we start with this:
A | A or ~A
------------
T
F
Now we apply those values to the statement. The controlling operator is the or. So to find the actual truth we need to figure out whether or not the or is true. The only other operator is the not. So first we figure out the values for the not (~).
A | A or ~A
------------
T | | | F
F | | | T
Now that that's done since we already know the value of A from the our left table we can assign a value to the or, knowing that for an or to be true only one of its members needs be true. So....
A | A or ~A
------------
T | | T | F
F | | T | T
And we have a finished truth table for (A or ~A). To be a tautology every statement must be true. Since this table meets that criteria, the premise is a tautology.
No matter what we put into the this phrase it will be true.
Examples:
It is raining here or it is not raining here.
I am a man or I am not a man.
There is a god or there is not a god.
In any event. I hope this helped some.
Last edited:
Hey Captian,
You're sure its really you doing the thinking? Perhaps a body snatcher has you, feeding you ideas that are really its own. Perhaps everyone out there has a different higher being, that shoots thoughts into our head all day, and makes us think that we're thinking. Or maybe you're just a big old brain, plugged into all the other brains in the world, and you don't know about it, so the only thinking you think you're doing is the thinking that your plugged in self does, but not the real you...
Ouch, I think that last one caused me to have an aneurism
You're sure its really you doing the thinking? Perhaps a body snatcher has you, feeding you ideas that are really its own. Perhaps everyone out there has a different higher being, that shoots thoughts into our head all day, and makes us think that we're thinking. Or maybe you're just a big old brain, plugged into all the other brains in the world, and you don't know about it, so the only thinking you think you're doing is the thinking that your plugged in self does, but not the real you...
Ouch, I think that last one caused me to have an aneurism
TheERK said:
I always get a kick out of arrogant people like you. What you supplied is a pretty basic truth table, what I supplied was a complete truth table. I'll admit I added the first 2 Ts for clarity when they were in fact superfluous, however in the next post where it was explained (you didn't read this by chance) I took them out. really, learn a bit before you try and come off as all knowing.
visible said:
Alright, please explain your truth table, because it is entirely unclear to me:
A | A or ~A
--------------------------------
T | T T F
F | T T T
There are three columns to the right of the pipe character. Please explain what each of these columns mean.
Correcting someone's error, especially on a public forum, is not arrogance.
Yo dj erock,
"You're sure its really you doing the thinking? Perhaps a body snatcher has you, feeding you ideas that are really its own. Perhaps everyone out there has a different higher being, that shoots thoughts into our head all day, and makes us think that we're thinking. Or maybe you're just a big old brain, plugged into all the other brains in the world, and you don't know about it, so the only thinking you think you're doing is the thinking that your plugged in self does, but not the real you..."
Regardless of all these fantastic possibilities...the fact remains that I CAN conclude that THOUGHT exists. Therefore, my assertion stands. Anyone else care to try?
"You're sure its really you doing the thinking? Perhaps a body snatcher has you, feeding you ideas that are really its own. Perhaps everyone out there has a different higher being, that shoots thoughts into our head all day, and makes us think that we're thinking. Or maybe you're just a big old brain, plugged into all the other brains in the world, and you don't know about it, so the only thinking you think you're doing is the thinking that your plugged in self does, but not the real you..."
Regardless of all these fantastic possibilities...the fact remains that I CAN conclude that THOUGHT exists. Therefore, my assertion stands. Anyone else care to try?
fadingCaptain said:
If that was the case, the "body snatcher" would be the one "feeding" you the thoughts that made you think you were being controlled by the body snatcher. Highly unlikely in my opinion. Besides, there would be some other form of contemplation than thinking.
Enigma'07 said:
That first truth table does have an error in it. The second one is right though, and the first one has a mistake but it's not so critical the table can't be understood. The table should read:
A | A or ~A
=========
T | T T F
F | F T T
Here is a breakdown of what those mean.
A | A or ~A
=========
T (one possibility of truth)
F (the other possibility)
A | A or ~A
=========
T | T (A is true, since it's true to begin with)
F | F (A is false, since it is false to begin with)
A | A or ~A
=========
T |T __ F (not A is false since A is true)
F | F __ T (not A is true since A is false)
A | A or ~A
=========
T | T T F (or is true since one of its connectives it true)
F | F T T (or is true since one of its connectives is true)
Once again, hope this helps.