Re: uncertainty

"Dmitry A. Kazakov" <[EMAIL PROTECTED]> a écrit dans le message de
news:[EMAIL PROTECTED]
> On Mon, 8 Sep 2003 18:32:04 +0200, "PGreenfinch"
> <[EMAIL PROTECTED]> wrote:
>
> >"William Siler" <[EMAIL PROTECTED]> a écrit dans le message de
> >news:[EMAIL PROTECTED]
> >> "PGreenfinch" <[EMAIL PROTECTED]> wrote in message
> >news:<[EMAIL PROTECTED]>...
> >>
> >> > Uncertainty is a risk you cannot quantify.
> >> > http://perso.wanadoo.fr/pgreenfinch/bfglo/bfglo.tu.htm
> >>
> >> The bald assertionof a blatantly untrue statement, even combined with
> >> an irrelevant reference, does not give it any credibility.
> >
> >If you are such certainty that uncertainty can be quantified
>
> I am afraid that if it is not, then there is nothing to talkabout.
>
> But the question is interesting. All definitions I know (probability,
> possibility, empiric confidence factors etc) are dealing with
> uncertainty defined as a set isomorphic to a set real numbers. As such
> they ARE quantified. Now, what do you mean? Either you want to move up
> to higher cardinals or down to say "uncertainty is damn uncertain". In
> either case, it looks not much promissory.
>
> >and that there in only one certain definition of uncertainty...
>
> Is your definition certain? What is "risk"? Why a quantified risk is
> certain. Is it? Driving a car, have you some quantified risk of an
> accident? Is that certain or uncertain to have an accident if you have
> a certain risk of having it? (:-))

Certainly ;-))