Subj : Re: Polymorphism sucks [Was: Paradigms which way to go?]
To   : comp.programming,comp.object
From : Robert C. Martin
Date : Sat Aug 27 2005 12:06 pm

On Thu, 25 Aug 2005 14:18:31 -0500, Chris Sonnack <Chris@Sonnack.com>
wrote:

>Robert C. Martin writes:
>
>> Sort of.  Fuzzy logic is 'set' logic where objects have 'partial'
>> membership in sets.  So, Captain Kirk is an 85% member of the set of
>> all good guys, and a 15% member of the set of all bad guys.
>
>And, insofaras "85%" and "15%" and "good guys" and "bad guys" are
>all (in this context) well-defined (not fuzzy), we're back where
>we started.

It's the membership that's fuzzy.  The sets and elements themselves
are discrete.  

Let's say we decide to invoke the 'kill' operation on all the members
of the bad-guy set.  Kirk is only a 15% member?  Is he only 15% dead?
Or does he have a 15% chance of being killed?  

This is similar to the position of an electron.  An electron of known
energy has a fuzzy membership in the set of all objects that are at
position p. 



-----
Robert C. Martin (Uncle Bob)  | email: unclebob@objectmentor.com
Object Mentor Inc.            | blog:  www.butunclebob.com
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"The aim of science is not to open the door to infinite wisdom, 
 but to set a limit to infinite error."
    -- Bertolt Brecht, Life of Galileo

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