On what kinds of questions are those invalid existential conclusions relevant?

Like, A-->B some C

And we can't conclude A some C.

Are these in must be false questions? Has anyone come across a question that deals with this kind of bad conclusion?

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2 comments

  • Thursday, Oct 02 2014

    Ah, thanks a lot!

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  • Thursday, Oct 02 2014

    Parallel method of reasoning, parallel flaw method of reasoning, must be true, must be false. That's what I can remember off the top of my head.

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