Monox D. I-Fly Senior Member Indonesia monoxdifly.iopc.us Joined 5137 days ago 762 posts - 664 votes Speaks: Indonesian*
| Message 1 of 9 28 October 2015 at 6:39pm | IP Logged |
Today in my workplace, my QC asked me what's the negation of "There are people who wear glasses". According to me, mathematically it should be "There is no people who wear glasses", because:
"There are people who wear glasses" = "Some people who wear glasses"
Its negation becomes "All people don't wear glasses" which means "There is no people who wear glasses"
However, she said that linguistically the negation should be "There are people who don't wear glasses"
Which one is correct?
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rapp Senior Member United States Joined 5733 days ago 129 posts - 204 votes Speaks: English* Studies: Esperanto, Spanish
| Message 2 of 9 28 October 2015 at 7:49pm | IP Logged |
It depends on how strict you are being when you ask for the "negation" of the sentence. Strictly speaking, I would phrase the negation as "There are no people who wear glasses."
Her sentence is grammatically correct, but is not really a negation of the original sentence, because both her sentence and the original one can be true at the same time.
The only error in your sentence is that "is" requires a singular noun. So "There is no person who wears glasses" would be correct grammatically, and would be a proper negation of the original sentence.
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Monox D. I-Fly Senior Member Indonesia monoxdifly.iopc.us Joined 5137 days ago 762 posts - 664 votes Speaks: Indonesian*
| Message 3 of 9 29 October 2015 at 12:44am | IP Logged |
Well, the sentence was originally in Indonesian, so I am sorry for any grammatical error.
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SallImSayin Diglot Newbie United States Joined 5768 days ago 19 posts - 20 votes Speaks: English*, Esperanto Studies: Swahili, Lingala, Igbo
| Message 4 of 9 26 January 2016 at 4:07am | IP Logged |
I'd say, "There are people who don't wear glasses". My buds (we're all native
speakers..from Midwest, East, South regions)said the same. That's what comes and sounds
most naturally.
If I were to say it the other way, I'd say, "There is no one who wears glasses" but I
can't imagine saying it like that.
Edited by SallImSayin on 26 January 2016 at 4:08am
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Monox D. I-Fly Senior Member Indonesia monoxdifly.iopc.us Joined 5137 days ago 762 posts - 664 votes Speaks: Indonesian*
| Message 5 of 9 26 January 2016 at 1:50pm | IP Logged |
So far, rapp's explanation has been satisfactory.
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luke Diglot Senior Member United States Joined 7207 days ago 3133 posts - 4351 votes Speaks: English*, Spanish Studies: Esperanto, French
| Message 6 of 9 29 January 2016 at 2:25am | IP Logged |
I think your teacher is correct.
Original: There are people who wear glasses.
Negation: There are people who don't wear glasses.
It's the sensible, common, correct negation.
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Monox D. I-Fly Senior Member Indonesia monoxdifly.iopc.us Joined 5137 days ago 762 posts - 664 votes Speaks: Indonesian*
| Message 7 of 9 30 January 2016 at 2:42pm | IP Logged |
Nope, because both of them can be true at the same time, thus they can't be negating each other.
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luke Diglot Senior Member United States Joined 7207 days ago 3133 posts - 4351 votes Speaks: English*, Spanish Studies: Esperanto, French
| Message 8 of 9 02 February 2016 at 3:01am | IP Logged |
It's a linguistic exercise, not a logic problem.
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