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SuperPrep B, Section 4 question 17
Posted: Fri May 14, 2010 8:35 pm
by harvardgurl4eva
Why can the statement "Everyone who is excessively generous is not levelheaded" be rephrased as "No one who is levelheaded is excessively generous."
I thought this was conditional reasoning, and so:
EG ---> [strike]L[/strike]
L ----> [strike]EG[/strike]
What am I missing? Thanks TLS you are my favorite!
Re: SuperPrep B, Section 4 question 17
Posted: Fri May 14, 2010 9:33 pm
by Dany
I think it's:
EG <--|--> L
EG precludes L, and L precludes EG.
Re: SuperPrep B, Section 4 question 17
Posted: Sat May 15, 2010 4:59 am
by srpaik
harvardgurl4eva wrote:Why can the statement "Everyone who is excessively generous is not levelheaded" be rephrased as "No one who is levelheaded is excessively generous."
I thought this was conditional reasoning, and so:
EG ---> [strike]L[/strike]
L ----> [strike]EG[/strike]
What am I missing? Thanks TLS you are my favorite!
You are not missing anything, and in fact, your conditional reasoning is just correct.
"Everyone who is excessively generous is not levelheaded"
EG --> [strike]L[/strike]
which is just as you did,
L --> [strike]EG[/strike]
But the next condition is "No one who is levelheaded is bold"
L --> [strike]B[/strike]
This gives us
L --> [strike]EG[/strike] and [strike]B[/strike]
Answer choice D fits perfect with this condition.
If Levelheaded, then neither B nor EG
Re: SuperPrep B, Section 4 question 17
Posted: Sat May 15, 2010 10:32 am
by harvardgurl4eva
srpaik wrote:harvardgurl4eva wrote:Why can the statement "Everyone who is excessively generous is not levelheaded" be rephrased as "No one who is levelheaded is excessively generous."
I thought this was conditional reasoning, and so:
EG ---> [strike]L[/strike]
L ----> [strike]EG[/strike]
What am I missing? Thanks TLS you are my favorite!
You are not missing anything, and in fact, your conditional reasoning is just correct.
"Everyone who is excessively generous is not levelheaded"
EG --> [strike]L[/strike]
which is just as you did,
L --> [strike]EG[/strike]
But the next condition is "No one who is levelheaded is bold"
L --> [strike]B[/strike]
This gives us
L --> [strike]EG[/strike] and [strike]B[/strike]
Answer choice D fits perfect with this condition.
If Levelheaded, then neither B nor EG
Thanks a lot, I had misdiagrammed the second statement