I have a question about Group 3 Conditional Indicators.

I'm sorry if this isn't the right way to use this. There was no option to comment on the video.

In this free video, https://7sage.com/classes/evt_0326Eqo5FmfXtA1QAeVlf2 the instructuor gives the example, "I will go to the concert, unless it is a 2 hour drive."

This maps out to be either:

/concert --> 2 hour drive

/2 hour drive --> concert

Would it also end up being correct to rephrase this and say in more basic language, "If it is a 2 hour drive, then I will not go to the concert?" It changes the mapping to:

2 hour drive --> /concert

concert --> 2 hour drive

So I'm assuming you can't and that you have to follow the conditional indicator rule of just choosing an argument negating & making sufficient, but just wanted to double check.

Thanks for the help!

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1 comments

  • Sunday, Jan 25

    You're correct, "I will go to the concert, unless it is a 2 hour drive." maps out as

    concert-/2 hour drive

    and the contrapositive is

    /concert-2 hour drive

    You can't say If its a 2 hour drive then I won't go to the concert because then the concert becomes necessary for the 2 hour drive to happen you confusing sufficiency for necessity.

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