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- Path: sparky!uunet!gumby!destroyer!cs.ubc.ca!columbia.cs.ubc.ca!not-for-mail
- From: kean@cs.ubc.ca (Alex Kean)
- Newsgroups: sci.logic
- Subject: Re: Are all crows black? => Logic as an essential
- Date: 13 Nov 1992 15:11:52 -0800
- Organization: Computer Science, University of B.C., Vancouver, B.C., Canada
- Lines: 44
- Message-ID: <1e1cnoINN74a@columbia.cs.ubc.ca>
- References: <MARTINC.92Nov12021908@hatteras.cs.unc.edu> <1duqtpINNjl1@columbia.cs.ubc.ca> <1992Nov12.231756.17396@husc3.harvard.edu>
- NNTP-Posting-Host: columbia.cs.ubc.ca
-
- In article <1992Nov12.231756.17396@husc3.harvard.edu> zeleny@husc10.harvard.edu (Michael Zeleny) writes:
- >>> ....
- >>>Let's not put Will off of syllogistic logic, though, please. There are
- >>>too many people graduating as it is without knowing the difference
- >>>between "All men are mortal/Socrates is a man -> Socrates is mortal" and
- >>>"All men are mortal/Socrates is mortal -> Socrates is a man".
- >
- >AK:
- >>I have not graduated yet, what is the difference?
- >
- >Validity. (This is truly depressing.)
- >
-
- Very true. In fact, the first form of inference as we know is deduction,
- and the second form is actually know as abduction. It is correct that
- abduction is not truth preserving, nevertheless, it is a form of inference
- used widely in our everyday life. My curiosity for posting stamps from
- my interest on abduction, the non-truth preserving inference, but is used
- commonly enough *as if it is truth preserving*.
-
-
- >AK:
- >>Best Regards,
- >
- >Have you considered a career in feminist computer science?
- >
-
- I have not graduated yet, what is feminist computer science?
-
- Best Regards,
-
- Alex Kean <kean@cs.ubc.ca>
-
- Department of Computer Science
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