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October 26th, 2007, 04:53 PM   #1
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Validity of argument . Euler diagrams

How does one draw a Euler diagram to determine the validity of the following argument? Thanks:

Some philosophers are absent minded.
Zitta N is a philosopher.
Zitta N is absent minded.

If someone would draw a pic that would be great.
rune2402 is offline  
October 27th, 2007, 05:05 AM   #2
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Draw two circles which overlap a bit, one to represent philosophers, and the other to represent the absent-minded; the overlap represents that some philosophies are absent-minded. There is a non-overlapped region within each circle, so being inside one circle doesn't imply being within the other. Some form of annotation could be used for clarification.
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October 28th, 2007, 04:30 AM   #3
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Thanks. i thought of that, but somehow it makes little sense. thanks again.
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