Logic vs evidence

Discussion in 'General Philosophy' started by Magical Realist, Mar 30, 2016.

  1. Michael 歌舞伎 Valued Senior Member

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    You would agree Logic is a type of reasoning?

    I don't agree Logic is a type of knowledge. Logic doesn't actually generate new "Truths" does it? I thought it basically determines if inferences are valid. A couple metaphors that may sum up Logic (in my mind) is a pH strip. You dip it in a solution, you read what it says. It doesn't generate the pH nor the solution. It just tells you the pH.

    Or a better analogy would be as a meat grinding-gear. Into the top of the meat grinder you pour in your meat (sound premises), then you select a gear-grind (or a type of Logic you wish to use), then you turn the handle (Logical inference) and Wa-La, out comes sausages (Logical conclusions). In this analogy, Logic is the gear-grind. You can change these depending on the type of meat you want to grind. Obviously not all meat can be ground by the same gears. Likewise, not all premises can be have the same logical operations applied to them.


    Maybe we agree? It sounds like the real definition needed is Epistemology and Logic's place in that field.
     
    zgmc likes this.
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  3. river Valued Senior Member

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    Sort of ; but logic is limited by the information given or knowledge given ; logic is bounded ; constricted

    Where as knowledge and reasoning is not bounded ; nor constricted .
     
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  5. DaveC426913 Valued Senior Member

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    What is reasoning that logic is not?

    How is logic constricted yet reasoning is not?
     
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  7. river Valued Senior Member

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    Flexible

    Think
     
  8. DaveC426913 Valued Senior Member

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    I see this is going to take while...

    And how is reasoning flexible whereas logic is not?

    Wait. Let's back up. You're one for definitions. Compare and contrast the definitions of logic and reasoning.
     
  9. river Valued Senior Member

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    Logic needs information as the basis for its foundation of thought .

    Reasoning takes knowledge given and then thinks upon.
     
  10. DaveC426913 Valued Senior Member

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    So,
    - one needs 'information', the other needs 'knowledge'.
    - one has a 'foundation for thought' and the other 'thinks upon'.
    And the difference between those wrt this is...
     
  11. river Valued Senior Member

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    Refer to my post # 116
     
  12. DaveC426913 Valued Senior Member

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    Great. These definitions came from where exactly?
     
  13. river Valued Senior Member

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    From me.
     
  14. DaveC426913 Valued Senior Member

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    Precisely.
     
  15. river Valued Senior Member

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    Have a problem this ?
     
  16. DaveC426913 Valued Senior Member

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    One cannot take existing words with existing definitions, redefine them at will, and expect to engage in meaningful discussion.
     
  17. river Valued Senior Member

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    Why ; information and knowledge are the same ; explain to me the difference .
     
  18. DaveC426913 Valued Senior Member

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    That was my point. You were asserting that logic and reasoning were different (one was somehow limited), yet the words you chose to define them do not show a meaningful difference, or explain why one is limited whereas the other is not.


    The words you are attempting to redefine in post #116 are 'logic' and 'reasoning'.

    Just stick to the defined terms.
     
  19. river Valued Senior Member

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    Hmm... Logic without knowledge or information is not possible

    Understand
     
    Last edited: Apr 10, 2016

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