KushtonS187
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Vinny Gambini
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When there are 2 logical indicators, which do we use ?

by KushtonS187 Thu Aug 17, 2017 8:25 am

So I'm reading the Manhattan LR Book am a bit confused with this concept:

When there are 2 sufficient or necessary assumption indicators in a sentence (e.g., If, Any, When, All, Every) which one do we use to diagram out when writing a conditional statement?

Thank you
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ohthatpatrick
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Re: When there are 2 logical indicators, which do we use ?

by ohthatpatrick Fri Aug 18, 2017 6:27 pm

Either, but not both, probably.

Ultimately, it comes down to this:
can you read the sentence and convert it into any sense of
"If I know THIS, then I am CERTAIN of that"

Sometimes you deal with both by adding more conditions to the left side:

Anyone from the South who only knows about Maine from calendars will inevitably think that Maine's leaves are always multi-colored.

IF from south AND only know Maine from calendars THEN think Maine's leaves are always multi-colored.

A formulation that's come up on some recent tests is this:
If A, then B, unless C

I like to handle that by saying
A and ~C --> B

Other times, it doesn't matter. You could use either trigger and you'd basically get the same result.

No one who has read Shakespeare will like rap unless they enjoy irony.

I could symbolize that:
IF you don't enjoy irony --> THEN [IF you've read Shakespeare, you won't enjoy rap]
or
IF a Shakespeare reader doesn't enjoy irony ---> THEN they won't enjoy rap.
or
IF you've read Shakespeare ---> THEN you won't like rap unless you enjoy irony

All of those are correct. Which is best? Depends on the context and your brain. So if it's a complex sentence, use your best judgment and feel free to stay all the conditions/details you need into the left side.

IF you've read Shakes AND you don't enjoy irony --> THEN you won't enjoy rap
 
KushtonS187
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Vinny Gambini
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Re: When there are 2 logical indicators, which do we use ?

by KushtonS187 Sat Aug 19, 2017 12:38 pm

Makes so much sense!

Thank you so much for all of your help.

Manhattan truly has the best instructors and books on the market <3