Could someone tell me how I should be reading the kind of answer choices that identify a flaw by saying the argument “confuses X for Y” or a sufficient condition for a necessary condition? When I try to use piecemeal analysis to figure out what is being confused for what - like which clause actually appears in the argument vs which clause should’ve appeared in the argument - I always get lost.

TIA

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3 comments

  • Kade_Katrak Independent Tutor
    Friday, May 1

    Sure. Let's imagine that we have a simple flawed argument:

    To win the marathon, you need to run the whole way. Sam ran the whole way. Therefore, Sam won the marathon.

    The correct diagram of the initial rule would look like:

    Win Marthon --> Run the Whole Way

    But the argument messed it up. They think that because Sam ran the whole way, he won. They think the rule is:

    Run the Whole Way --> Win Marathon

    The correct answer choice would say something like:

    Confuses a necessary condition for winning a marathon with a condition sufficient to win a marathon.

    The term immediately after "Confuses" is the real rule. "Running the whole way" is a necessary condition for winning the marathon according to our initial rule. But the argument treated "Running the whole way" as a sufficient condition to win the marathon.

    3
  • MichaelWright Instructor
    Thursday, Apr 30

    Good job distilling this problem -- it's a tough one. Generally, the actual thing comes first.

    Let's say your car is actually blue, but I say "I like your red car". I am...

    Mistaking a blue car for a red car.

    Confusing a blue car for a red car.

    Taking a blue car for a red car.

    Treating a blue car as a red car.

    Regarding a blue car as a red car.

    I can reverse the order by using non-directional phrases like "equating" or "conflating". Basically phrases that mean "treats these two different things as though they're the same thing". So like:

    Conflating red and blue cars.

    Equating red cars and blue cars.

    That's kinda fine, though, because for these phrases it doesn't matter which thing you put first, so there's no way to be wrong-because-backward.

    Last pro tip -- thorny wording like this where you're tracking concepts piecemeal is prime "write things down" territory.

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    Friday, May 1

    @MichaelWright incredible explanation. Thank you.

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