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  1. #1

    Default The Fault With Logic...

    Hey guys. I wanted to discuss this for a while, believe it or not I respect the opinions of TWC posters highly... Ahem... ok, enough kissing ass... Let's discuss the matter at hand.

    Logic, our atheists here will claim that this is the ultimate form of interpreting information. I agree to disagree, I don't think all of the world's problems can be solved with pure logic alone as you'll see why in a second.

    Logic in its purest form is concrete, mathematical reasoning and analysis. When people debate here on TWC, the arguments do not really follow rigid system, it is more abstract and full of fallacies, I am certain every poster on TWC D&D have made logical fallacies before. If you truly studied logic (I studied proofs in 9th grade geometry if that counts) you will see that it follows a strict system of definitions and axioms, all based on concrete facts.

    Let me just state this off the bat, if you use logic to make 100% of your decisions, you should agnostic right around now. Why? Well, you can neither prove nor disprove god with logic and any attempts to do so will result in... http://en.wikipedia.org/wiki/Argument_from_ignorance. In short, neither atheists nor theists can claim to be arguing from logic when debating god.

    As you can see, you can never make decisions from pure logic unless your facts are 100%. This is great for doing math but really inconvenient when discussing philosophy and morality as there are few facts regarding moral absolutes... You can say that stabbing someone will cause pain but you can't argue that causing pain is wrong just from pure logic... A=B does not mean B=C...

    Another fault in logic is that you cannot really predict future events with pure logic unless it is a frequently occurring event and you can establish facts... For example:

    Your 16 year old daughter an 18 year old boy. His car smells like dried semen, there are beer bottles in his back seat and condoms in his dashboard... They ride off into the night.

    If you were to deduce what events would unfold throughout the night using pure logic, you would tripping in a fallacy minefield... As far as logic is concerned, you cannot say for certain what events will unfold as doing so would result in arguing from ignorance as well as an assortment of other fallacies http://en.wikipedia.org/wiki/List_of_fallacies...

    Logic will never be able to predict the future unless it is calculated using purely established laws (like in physics)... I do not think any father will be content when he finds his daughter home all drunk with ripped clothes... He can blame that on logic...

    So, I would even go so far as to say pure logic is useless when debating morality... The only thing it can do is dish out statistics and tell me killing someone will hurt. When you need real answers, you call...

    Intuition... Yes, this little thing never ceases to amaze me. I like to think of intuition as a combination of logic and emotions all jumbled up in your head, mixed with patterns you have seen before in your lifetime. It is that gut feeling that tells you not to let your daughter out with that strange boy... It does a better job of analysis then both emotion of logic. It can predict the future with more accurate results and the cool thing is, everyone is born with it. Think about it, you can go to a logic class to improve your logic but I have never heard of an intuition class... 99% of my decision making is intuition, it just happens on the fly. I need time to calculate logic, I don't always have time when I'm making split decisions...

    People think that debate is all about logic, I think it has more to do with intuition. You can clearly out logic someone by performing the correct calculations but you cannot prove that you have a better intuition. In fact, that's all debate is, trying to prove that your intuition is correct when really it's subjective. I think that if you really want to learn something, you need to approach it with an open mind and really explore it with your own shoes, that way you will gain more intuitive insight into truth in general...


  2. #2
    Ummon's Avatar Indefinitely Banned
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    Default Re: The Fault With Logic...

    Induction has been incorporated into deduction, thus prediction is logically possible: merely inferential.

  3. #3

    Default Re: The Fault With Logic...

    Quote Originally Posted by Ummon View Post
    Induction has been incorporated into deduction, thus prediction is logically possible: merely inferential.
    Induction is often times wrong though...

    All observed crows are black.Therefore:All crows are black.
    I always hang pictures on nails.Therefore:All pictures hang from nails.http://en.wikipedia.org/wiki/Inductive_reasoning
    http://en.wikipedia.org/wiki/Problem_of_induction


  4. #4
    Leeham991's Avatar Campidoctor
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    Default Re: The Fault With Logic...

    Well, logic only works if the person initiating it is intelligent. And even when used by brainless hillbillies logic is far better than any religious dogma.
    I like pie.

  5. #5

    Default Re: The Fault With Logic...

    Quote Originally Posted by Leeham991 View Post
    Well, logic only works if the person initiating it is intelligent. And even when used by brainless hillbillies logic is far better than any religious dogma.
    That's logical fallacy citing ad hominem; appeal to ridicule; argument from ignorance other stuff here http://en.wikipedia.org/wiki/List_of_fallacies

    Nice try come again...


  6. #6
    Leeham991's Avatar Campidoctor
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    Default Re: The Fault With Logic...

    Quote Originally Posted by mkesadaran View Post
    That's logical fallacy citing ad hominem; appeal to ridicule; argument from ignorance other stuff here http://en.wikipedia.org/wiki/List_of_fallacies

    Nice try come again...
    Maybe you should read what you link? You pretty much summed up your own post.
    I like pie.

  7. #7

    Default Re: The Fault With Logic...

    Quote Originally Posted by mkesadaran View Post

    Let me just state this off the bat, if you use logic to make 100% of your decisions, you should agnostic right around now.
    Otherwise known as weak atheism, you won't find atheists who will tell that such a thing as a God is completely impossible. They point well point out flaws in a particular deity or ask for evidence when presented with any one particular god, and that would logical to do that as you would do that with anything.

  8. #8

    Default Re: The Fault With Logic...

    Quote Originally Posted by Helm View Post
    Otherwise known as weak atheism, you won't find atheists who will tell that such a thing as a God is completely impossible.
    Oh trust me I've found atheists who said that... Even if you are stating there is no god, you are arguing from ignorance since you don't know...

    They point well point out flaws in a particular deity or ask for evidence when presented with any one particular god, and that would logical to do that as you would do that with anything.
    But in the end both would be arguing from ignorance, it's pointless, my belief in god comes from intuition not pure logic...


  9. #9

    Default Re: The Fault With Logic...

    Quote Originally Posted by Helm View Post
    Otherwise known as weak atheism, you won't find atheists who will tell that such a thing as a God is completely impossible. They point well point out flaws in a particular deity or ask for evidence when presented with any one particular god, and that would logical to do that as you would do that with anything.
    Considering agnosticism doesn't take a stance on God's existence I'm not sure how you can, with any sanity, compare it to weak atheism.
    One thing is for certain: the more profoundly baffled you have been in your life, the more open your mind becomes to new ideas.
    -Neil deGrasse Tyson

    Let's think the unthinkable, let's do the undoable. Let us prepare to grapple with the ineffable itself, and see if we may not eff it after all.

  10. #10

    Default Re: The Fault With Logic...

    Logical reasoning is perfect. Only the premises are inherently flawed.

  11. #11

    Default Re: The Fault With Logic...

    Quote Originally Posted by iudas View Post
    Logical reasoning is perfect. Only the premises are inherently flawed.
    True. After all you can't even prove you exist through deduction... All logical deductions start with an axiom, whenever that's missing we have a problem...


  12. #12

    Default Re: The Fault With Logic...

    I'm fully open to possibility of the biblical God existing, as well as Zeus and FSM, all possible. But unlikely to be fair.

  13. #13

    Default Re: The Fault With Logic...

    Quote Originally Posted by Helm View Post
    I'm fully open to possibility of the biblical God existing, as well as Zeus and FSM, all possible. But unlikely to be fair.
    You're not really open to the flying spaghetti monster though, that's just the politically correct thing to say in this situation...


  14. #14

    Default Re: The Fault With Logic...

    I'm not really open to the biblical God either, but that's different to saying he's entirely impossible.

  15. #15

    Default Re: The Fault With Logic...

    Quote Originally Posted by Helm View Post
    I'm not really open to the biblical God either, but that's different to saying he's entirely impossible.
    Well if you're not open to it don't say you're "fully open to it" lmao. Make up your mind.

    Quote Originally Posted by Leeham991 View Post
    Maybe you should read what you link? You pretty much summed up your own post.
    I am pointing out the logical fallacies in your post. Care to sum up mines?


  16. #16
    Tankbuster's Avatar Analogy Nazi
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    Default Re: The Fault With Logic...

    Hi mkesadaran,

    Quote Originally Posted by mkesadaran View Post
    Logic, our atheists here will claim that this is the ultimate form of interpreting information. I agree to disagree, I don't think all of the world's problems can be solved with pure logic alone as you'll see why in a second.
    Actually, no atheist would claim that pure logic alone can solve the world's problems. That would be Descartes-like thinking, and that has been proven to be quite worthless a long time ago.
    I myself am quite happy to admit that I use logic as well as emotions, intuitions and several unprovable assertions to live my life. So will most other people. So really right off the bat, I don't know who you're arguing against
    Logic in its purest form is concrete, mathematical reasoning and analysis. When people debate here on TWC, the arguments do not really follow rigid system, it is more abstract and full of fallacies, I am certain every poster on TWC D&D have made logical fallacies before. If you truly studied logic (I studied proofs in 9th grade geometry if that counts) you will see that it follows a strict system of definitions and axioms, all based on concrete facts.
    No I'm sorry, there are different sets of logic. There is paraconsistent logic, Aristotelian logic, intuitionist logic, multi-value logic... The mathematical logic is only a small part of this.
    I use the mathematical type of logic in engineering classes, but both in practice and in philosophy we use different kinds of logics.
    Let me just state this off the bat, if you use logic to make 100% of your decisions, you should agnostic right around now. Why? Well, you can neither prove nor disprove god with logic and any attempts to do so will result in... http://en.wikipedia.org/wiki/Argument_from_ignorance. In short, neither atheists nor theists can claim to be arguing from logic when debating god.
    Most atheists don't claim to be able to disprove God
    What we claim is that they find the arguments proposed in favour of a deity are unconvincing. This doesn't need to have much to do with logic, because we are responding to the believer's claims. Therefore we simply use the same set of logic they use. So no assumptions on our part there.

    As you can see, you can never make decisions from pure logic unless your facts are 100%. This is great for doing math but really inconvenient when discussing philosophy and morality as there are few facts regarding moral absolutes... You can say that stabbing someone will cause pain but you can't argue that causing pain is wrong just from pure logic... A=B does not mean B=C...

    Another fault in logic is that you cannot really predict future events with pure logic unless it is a frequently occurring event and you can establish facts... For example:

    Your 16 year old daughter an 18 year old boy. His car smells like dried semen, there are beer bottles in his back seat and condoms in his dashboard... They ride off into the night.

    If you were to deduce what events would unfold throughout the night using pure logic, you would tripping in a fallacy minefield... As far as logic is concerned, you cannot say for certain what events will unfold as doing so would result in arguing from ignorance as well as an assortment of other fallacies http://en.wikipedia.org/wiki/List_of_fallacies...

    Logic will never be able to predict the future unless it is calculated using purely established laws (like in physics)... I do not think any father will be content when he finds his daughter home all drunk with ripped clothes... He can blame that on logic...
    No, look, you're engaging in a basic fallacy here.
    It's of course true that deductive statements are the only logically correct ones, and that inductive reasoning can never be absolutely certain about anything.
    But that's where the truth stops. Just because this is the case, doesn't mean that one position cannot be more rational than another one.
    What you've just shown is that absolute certainty and absolute rationality are impossible; that's true. They are unattainable. They are still degrees of certainty and degrees of rationality, because inductive (and other kinds of) reasoning can still lead to certain conclusions that may or not have good amounts of evidence behind them.

    For example, I can only assume from inductive reasoning that the sun will come up tomorrow. I can't be absolutely sure, but since it has been happening for every single time for millions of years and we don't have a good reason to assume why it would stop tomorrow, I'll be happy to go out tomorrow and not hide in my basement.
    Similarly I will not drive a car when I'm drunk, because I know (again from inductive reasoning) that alcohol can cloud my judgement and reflexes and that there's a high chance of danger. A quick cost-risk analysis learns me that I would be better off walking.
    Both statements are rational and rely on basic common sense. And have plenty of logical steps in them, without claiming to be absolute truths.
    So, I would even go so far as to say pure logic is useless when debating morality... The only thing it can do is dish out statistics and tell me killing someone will hurt. When you need real answers, you call...
    You call common sense and basic rationality.
    People think that debate is all about logic, I think it has more to do with intuition. You can clearly out logic someone by performing the correct calculations but you cannot prove that you have a better intuition. In fact, that's all debate is, trying to prove that your intuition is correct when really it's subjective. I think that if you really want to learn something, you need to approach it with an open mind and really explore it with your own shoes, that way you will gain more intuitive insight into truth in general...
    I couldn't disagree more. Your post is an excellent attempt to discredit rationality, but it fails at several points.
    The point remains that some positions are more rational and are more supported by logic and evidence than others. These positions will tend to win in a debate.

    It's one thing to say that debates aren't just about logic, it's another to say that they are intuitive. Truth is never intuitive.

    Anyhow, interesting thread
    The Sabbath was made for man, not man for the Sabbath
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  17. #17

    Default Re: The Fault With Logic...

    Quote Originally Posted by Tankbuster View Post
    Actually, no atheist would claim that pure logic alone can solve the world's problems. That would be Descartes-like thinking, and that has been proven to be quite worthless a long time ago.
    I myself am quite happy to admit that I use logic as well as emotions, intuitions and several unprovable assertions to live my life. So will most other people. So really right off the bat, I don't know who you're arguing against
    You are generalizing seeing how I've seen atheists make these claims. An example of the faults behind induction...

    No I'm sorry, there are different sets of logic. There is paraconsistent logic, Aristotelian logic, intuitionist logic, multi-value logic... The mathematical logic is only a small part of this.
    I use the mathematical type of logic in engineering classes, but both in practice and in philosophy we use different kinds of logics.
    Those logics are full of faults and criticisms... Like someone already stated, mathematical logic is good though the problem is, we don't have all the axioms...

    Most atheists don't claim to be able to disprove God
    What we claim is that they find the arguments proposed in favour of a deity are unconvincing. This doesn't need to have much to do with logic, because we are responding to the believer's claims. Therefore we simply use the same set of logic they use. So no assumptions on our part there.
    Like I already stated multiple times, both are arguing from ignorance case closed. No ands, ifs, or buts...
    No, look, you're engaging in a basic fallacy here.
    It's of course true that deductive statements are the only logically correct ones, and that inductive reasoning can never be absolutely certain about anything.
    But that's where the truth stops. Just because this is the case, doesn't mean that one position cannot be more rational than another one.
    What you've just shown is that absolute certainty and absolute rationality are impossible; that's true. They are unattainable. They are still degrees of certainty and degrees of rationality, because inductive (and other kinds of) reasoning can still lead to certain conclusions that may or not have good amounts of evidence behind them.
    Who are you to say who's more rational than the other. You can't have proof unless it already happened, just induction. How can you say your conclusion is rational when the "evidence" is subjective... He could have simply had a friend with a girl in the back of his car. The beer is from his friend, as are the condoms... You really don't know anything, everything is subjective...

    For example, I can only assume from inductive reasoning that the sun will come up tomorrow. I can't be absolutely sure, but since it has been happening for every single time for millions of years and we don't have a good reason to assume why it would stop tomorrow, I'll be happy to go out tomorrow and not hide in my basement.
    And I can also assume that one day I will not see the sun and therefore die...

    Similarly I will not drive a car when I'm drunk, because I know (again from inductive reasoning) that alcohol can cloud my judgement and reflexes and that there's a high chance of danger. A quick cost-risk analysis learns me that I would be better off walking.
    Then again there are people who claim from inductive reasoning that they are capable of performing such a task. Like I said, everything is subjective...

    Both statements are rational and rely on basic common sense. And have plenty of logical steps in them, without claiming to be absolute truths.
    According to you, your truth is not necessarily the same as another man's truth because both are not truth, just induction...

    You call common sense and basic rationality.
    It's not common sense when your "truth" and belief is subjective...

    I couldn't disagree more. Your post is an excellent attempt to discredit rationality, but it fails at several points.
    I'm not discrediting rationality I'm discrediting your rationality...

    The point remains that some positions are more rational and are more supported by logic and evidence than others. These positions will tend to win in a debate.
    Evidence is also subjective, I can have a paranormal experience and have no further need of proof while Mr. Skeptic will can me a liar (not that I have had such experiences)...

    It's one thing to say that debates aren't just about logic, it's another to say that they are intuitive. Truth is never intuitive.

    Anyhow, interesting thread
    Truth is intuitive, like how I can smell when something fishy's going on yet can't point my finger to it. Those feelings are never wrong, at least not for me...
    Last edited by Shams al-Ma'rifa; November 22, 2009 at 09:49 AM.


  18. #18
    Tankbuster's Avatar Analogy Nazi
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    Default Re: The Fault With Logic...

    I was kind of expecting a coherent answer, but it seems I'll have to do with this:
    Quote Originally Posted by mkesadaran View Post
    You are generalizing seeing how I've seen atheists make these claims. That's one of the faults behind induction...
    You were the one generalizing when you started of with: "our atheists here will claim..." and then a whole line of garbage that I've certainly never seen anyone anywhere claim.
    So yeah, unless you can give me an actual intelligent atheist who says this (and not some 9-year-old kid), I'm not exactly impressed with this crusade against 'atheist logic'.
    Those logics are full of faults and criticisms... Like someone already stated, mathematical logic is perfect though the problem is, we don't have all the axioms...
    As I've told you already, mathematical logic is only 'perfect' in the context which we use it in. It does not apply to other areas of life. That's why we have different sets of logic there.
    Like I already stated multiple times, both are arguing from ignorance case closed. No ands, ifs, or buts...
    Nope. If the theist says "I believe in God for reason x, y and z" and I say "Sorry, but your logic there is incoherent for reason a, b and c and you're arguing from ignorance", then I'm not arguing from ignorance.
    Unless you're seriously claiming that pointing out how someone is arguing from ignorance is arguing from ignorance
    Who are you to say who's more rational than the other. There's no proof, just induction. How can you say your conclusion is rational when the "evidence" is subjective... He could have simply had a friend with a girl in the back of his car. The beer is from his friend, as are the condoms... You really don't know anything, everything is subjective...
    Is this seriously the kind of garbage you're going to try?
    Just because I'm not absolutely sure that it might not be his beer and that he might not have drunk it, it's still more likely that it is. And therefore my conclusion not to go with him will still be one based on common sense.
    And you can also assume that one day you will not see the sun and therefore die...

    Then again there are people who claim from inductive reasoning that they are capable of performing such a task. Like I said, everything is subjective...

    According to you, your truth is not necessarily the same as another man's truth...

    It's not common sense when truth is and belief is subjective...
    This 'everything is subjective' line really isn't going to fly.
    Of course, what we experience is subjective. But it doesn't mean that everything is just as subjective and just as unreliable. If you see a pink elephant while you were on narcotics then you might be very ardent about having experienced this pink elephant. Yet that will be a much more subjective experience than if you were to see pink elephants with an entire bus of sober people.
    Of course the pink elephant might have been real in both cases. Or in none of the cases. But in the second case it's less likely to be subjective and therefore I'll be less inclined to take the former as an argument.
    All of this is quite rational. There are gradations in everything.
    I'm not discrediting rationality I'm discrediting your rationality...
    And doing a rather poor job so far...

    There are gradations of subjectivity.
    The Sabbath was made for man, not man for the Sabbath
    --- Mark 2:27

    Atheism is simply a way of clearing the space for better conservations.
    --- Sam Harris

  19. #19

    Default Re: The Fault With Logic...

    The only race that uses the perfect logic is Vulcans! nuff said

  20. #20

    Default Re: The Fault With Logic...

    Quote Originally Posted by Tankbuster View Post
    I was kind of expecting a coherent answer, but it seems I'll have to do with this.
    You know dude I'm getting kind of sick of your know it all attitude. Just show a little respect please...

    You were the one generalizing when you started of with: "our atheists here will claim..." and then a whole line of garbage that I've certainly never seen anyone anywhere claim.
    Your right I was generalizing. Sorry. We're both arguing from ignorance...

    So yeah, unless you can give me an actual intelligent atheist who says this (and not some 9-year-old kid), I'm not exactly impressed with this crusade against 'atheist logic'.
    That's an appeal to ridicule which is logical fallacy...

    As I've told you already, mathematical logic is only 'perfect' in the context which we use it in. It does not apply to other areas of life. That's why we have different sets of logic there.
    But all of them have faults and criticisms. You can't say that your logic is valid because you're logical... It's all subjective...

    Nope. If the theist says "I believe in God for reason x, y and z" and I say "Sorry, but your logic there is incoherent for reason a, b and c and you're arguing from ignorance", then I'm not arguing from ignorance. Unless you're seriously claiming that pointing out how someone is arguing from ignorance is arguing from ignorance
    No what you do is attack people's beliefs claiming the logical high ground. I'm going to throw in an ad hominem here:

    Quote Originally Posted by Tankbuster View Post
    Actually what concerns us that people are actually prepared to believe these things. That they are willing to believe that the Red Sea was split (by a divine wind ). They are willing to alter their political, economical convictions and their ideas about sexuality, evolution and ethics because of this silly book.
    So what if people believe in this. My belief in god comes from intuition and life experiences... You're just appealing to ridicule which is logical fallacy...

    Is this seriously the kind of garbage you're going to try?
    You really need to stop with the appeal to ridicule because it's just going to prove my case that half of all debates are like this...

    Just because I'm not absolutely sure that it might not be his beer and that he might not have drunk it, it's still more likely that it is. And therefore my conclusion not to go with him will still be one based on common sense.
    How do you know its more likely his. You don't even know him. You don't know his life. It's not common sense, you just think your logic is true for whatever reason...

    This 'everything is subjective' line really isn't going to fly.
    What do you mean no, it's true.

    Of course, what we experience is subjective. But it doesn't mean that everything is just as subjective and just as unreliable. If you see a pink elephant while you were on narcotics then you might be very ardent about having experienced this pink elephant. Yet that will be a much more subjective experience than if you were to see pink elephants with an entire bus of sober people.
    Of course the pink elephant might have been real in both cases. Or in none of the cases. But in the second case it's less likely to be subjective and therefore I'll be less inclined to take the former as an argument.
    What is real anyways, what makes something real, your experience or other people's experience?

    All of this is quite rational. There are gradations in everything.
    But who are you to judge? You're not the judge of rational thinking...

    And doing a rather poor job so far...
    Not really all you're doing is appealing to ridicule and claiming the logical high ground. My little cousins can do better...

    For me it's simple really. There only one truth which is god and everything else is not real.


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