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OR statements diagramming

I have a sincere doubt on diagramming 'OR'....

A or B is it incorrect to diagram as A --> /B , B --> /A

i know group 3 indicators are diagrammed as /A --> B , /B --> A

but would it make any difference if I simply drew A --> /B

been racking my brain about this....

vini

Comments

  • OlamHafuchOlamHafuch Alum Member
    2326 karma

    Very, very incorrect!
    Your suggested diagram allows for the possibility that both are out, while "or" means one has to be in!

  • yeshesviniyeshesvini Member
    edited October 2017 113 karma

    A --> B
    B --> A

    do not comprehend how this allows for the possibility that both are out

  • OlamHafuchOlamHafuch Alum Member
    2326 karma

    Because not B or not A doesn't trigger anything.

  • Watermelon OtterWatermelon Otter Alum Member
    edited October 2017 345 karma

    @yeshesvini said:
    A --> B
    B --> A

    do not comprehend how this allows for the possibility that both are out

    These conditionals leave the possibility for both to be out because if you fail the sufficient condition by placing A out, then the rule becomes irrelevant allowing B to be placed out (or in).

    A --> B is the correct way to diagram "or", because no matter what if you place one letter out, the other must be in (or both could be in).

  • yeshesviniyeshesvini Member
    113 karma

    aha!!! gotcha!!

    awesome you guys!!

    thanks heaps!

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