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  1. L

    Does logic equal truth?

    I did not say that. Modus Tollens was mentioned by Aristotle.
  2. L

    Does logic equal truth?

    I never said valid means true. Why are you attributing that to me? I know the difference. Truth in logic is referred to as SOUNDNESS. My claim is that Aristotle did not say logic is about validity, but you and others do. This thought was not brought up until the invention of Mathematical Logic.
  3. L

    Does logic equal truth?

    You are confused. You gave an example of an invalid argument that boke so any rules that it is hard to that logic. Use the proper rules and give me an example of all true premises and a true conclusion that is invalid. In your example Carter is not even in the premises. I know truth and...
  4. L

    Does logic equal truth?

    Can you please explain why you think logic is not about truth? I know about validity and I know only practical people care about it. I know of no philosophers in the 30's, 40's or 50's that cared about validity. What philosophers DID care about is SOUNDNESS. Other disciplines care about...
  5. L

    Does logic equal truth?

    Even this is UNTRUE. The logical form has a lot to do with the TRUTH. Even if you have all true propositions this does NOT MEAN the argument is valid. Do you know about argument MODD and Figure?
  6. L

    Does logic equal truth?

    Please state WHAT makes you think it [LOGIC] is not about truth? As a matter of difference Philosophers such as Aristotle never said what you claim. For Aristotle truth was in the PREMISES. Ussually when Aristotle demonstrated fallacies are the times he used premises he KNEW were false. In...
  7. L

    Does logic equal truth?

    You know you learned from a Mathematician by the terms used such as AXIOM, the use of HYPOTHESIS and CONCLUSION in a conditional statement. The belief the Contraposition is always valid, and so on.
  8. L

    Does logic equal truth?

    You are speaking strictly of a form. Modus tollens is logic and NOT math. This was pointed out by Aristotle thousands of years prior to Mathematical Logic. The fact M.P is in Mathematical logic does not make the two subjects the same.
  9. L

    Does logic equal truth?

    Yeah because you were taught most likely by a Math professor or Computer Science Professor. Philosophers of epistemology or logic itself would not define it that way nor would Aristotle. What do you know about classical logic as Aristotle taught?
  10. L

    Does logic equal truth?

    This shows me all of you have studied MATH. You just don't know the difference. You should be able to tell a tree by its fruit. Do any of you even know there is a branch literally called MATHEMATICAL LOGIC? This is what you refer to. You ought to be using the FULL NAME of the logic you...
  11. L

    What is True? Does A = A?

    In deductive logic the law of identity is not an axiom. Axiom is a Math term. Aristotles's logic begins with NO AXIOMS. The law of identity is sense verifiable --That is how we KNOW it to be true. Math people teach AXIOM stuff. 50 years ago you would never really say deductive logic has...
  12. L

    Does logic equal truth?

    "Mathematical-Logic" is all about VALIDITY. This is not the case with Deductive logic. People often commit the fallacy of composition when they conclude that because some things share a characteristic that the two different things are the same. I.E., those people who think math is logic and...
  13. L

    Does logic equal truth?

    You are using the WRONG word! Deductive logic describes a RELATIONSHIP between propositions --not random sentences or random events. The term you mean is PRACTICAL or even POSSIBLE and not logic. How many practical ways are there to my house or how many possible ways are there to my house...
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