Quantifiers Questions - - Question 20

Some twentieth-century art is great art. All great art involves original ideas, and any art that is not influential ...

Brett-Lindsay July 18, 2020

Negation typo in written answer

There appears to be a typo in the written answers: Stimulus Summary: (1) 20th century-some-Great (2) Great ? Original (3) Influential ? not Great I think the third point should be negated: (3) NOT Influential ? not Great

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Skylar July 20, 2020

@Brett-Lindsay, thanks for bringing this to our attention.

Great catch! You seem to have a solid understanding of Sufficient and Necessary language, and I agree with your logic. The statement "any art that is not influential cannot be great art" should be diagrammed as: not influential -> not great. The contrapositive of this is: great -> influential. The written answer appears to have a typo that fails to include the "not" before the word influential.

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Ambria May 24, 2021

I'm so glad that you posted this! I was going crazy over this. I'm like how is this correct?! Glad to know it's a typo. Can this be updated for future reference?

jessedalbrecht June 29, 2021

Thanks for clarifying Skylar

Alexander September 15, 2021

Please update this

Yumi September 20, 2021

I was confused with this too so I came here to ask, but you nailed it
Thank you

Shula July 12, 2023

Thank you, Brett!

LoganK05 December 14, 2023

Please update this typo as it is still not corrected. Also, please look for any other typos.