Re: Discrete Logic

WSiler (
Mon, 18 May 1998 02:45:59 +0200 (MET DST)

In a message dated 98-05-01 08:24:16 EDT, you write:

> But if we want the degree of truthness of something, we could do, as in
> fuzzy logic, to use fuzzy sets. And every set would give a different
> thruth, and overlapping them, we would get THE truth. But there's a
> problem. In the universe, there are infinite number of sets for anything
> we want to truthify. What can we do?
Is your question a philosophical questions, concerned with what we call
things, or is it a practical question, concerned with how we approach the
problem of real-world reasoning? If it is a practical question, then perhaps
we have something to talk about; but if it is a philosophical question, I'm
afraid I don't understand the question very well. Perhaps it is somewhere in
between these Boolean possibilities!

>From a practical viewpoint, we reason in limited domains. If we wish to
consider the possible truth of a number of statements such as X is good, X is
neutral, X is bad, we construct a fuzzy set of such statements. We then have
some data pertaining to X and to our value system, and we need some fuzzy
rules which relate these inputs to the truth of the various possible
statements about X, and away we go.

If we wish to consider an unlimited set of possibilities, in which the
possibilities are not numeric values, then I consider this to be an ill-formed
problem, and can be of no help.

William Siler