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October 26th, 2007, 04:53 PM  #1 
Member Joined: Oct 2007 Posts: 61 Thanks: 0  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. 
October 27th, 2007, 05:05 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 16,944 Thanks: 1255 
Draw two circles which overlap a bit, one to represent philosophers, and the other to represent the absentminded; the overlap represents that some philosophies are absentminded. There is a nonoverlapped 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.

October 28th, 2007, 04:30 AM  #3 
Member Joined: Oct 2007 Posts: 61 Thanks: 0  thanks
Thanks. i thought of that, but somehow it makes little sense. thanks again.


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