2 comments

  • Tuesday, Sep 06 2016

    Ohh..I see. Thanks! :)

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  • Tuesday, Sep 06 2016

    I believe it stands for Other People's Argument. That is to say that sometimes in arguments the stimulus will say something like "Some people believe that sunscreen prevents sunburn, but they are wrong." "They are wrong" is the conclusion and "some people believe..." is OPA.

    It is also something we come across in RC.

    edit punctuation

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