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- From: rmr@acsu.buffalo.edu (Richard M. Romanowski)
- Newsgroups: sci.cognitive
- Subject: Re: Logic and stuff
- Message-ID: <BxwG6E.Evs@acsu.buffalo.edu>
- Date: 18 Nov 92 06:47:02 GMT
- References: <1992Nov18.035416.23721@news2.cis.umn.edu>
- Sender: nntp@acsu.buffalo.edu
- Organization: UB
- Lines: 45
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-
- frank@i1.msi.umn.edu (Loren Frank) writes:
- >this sort fails to capture a number of intuitive notions like causality.
- > On the other hand there is also the less formal logic of "if I
- >step in front of a speeding bus, I will get hurt." (I think someone said
- >something like that recently) This makes sense, and seems logical, but it
- >cannot be demonstrated formally without the addition of a number of
- >premises having to do with the implications of stepping in front of,
- >speeding, and so on. We do not think of that sort of everyday statement
- >as logical in the formal sense, if for no other reason than we do not tend
- >to think of things in the language of P and Q's and strict implication and so
- >on.
-
- If we step in front of a bus, we will get hit
- if we get hit, we get hurt
- If we step in front of a bus, we get hurt
-
- Fairly logical ... but it assumes prior knowledge of the
- world, not gained by direct experience -- most people who have stepped
- in fron t of busses have not lived to tell of it.
-
-
- > On a slightly related topic, when people are given the following
- >scenario :Linda has been very active in social concerns for most
- >of her life. During college she was involved in a number of organizations
- >whose aim was to bolster the rights of the underrepresented.
- >People are then asked "which of the following is more likely:
- >1) Linda is a bank teller.
- >2) Linda is a bank teller and active in the feminist movement."
- >People almost always choose 2) even though the likelyhood of a conjunction
- >is always less than the likelyhood of one of the conjuncts.
-
- >I am not quite sure what that means, but it is true...
-
-
- I do not know anything, but I THINK it means that people don't
- care about the bank teller part -- whether or not it is true is irrelevant
- to them, because the part about feminism seems so intuitively correct.
-
- Conclusion: confronted with a pattern that seems to reflect
- reality, people toss logic out the window, which is perhaps why we pretend
- that math is unemptional. If we believed it related to reality,
- perhaps we would not be able to do it.
-
- Luck
- Rick
-