After many life-expectancy-spans worth of narrow escapes, after
thousands or millions of years, wouldn't the probability be pretty high
for my personality/memory etc. to change so much that I wouldn't
recognize myself, or that I could be more like another person than my
original self, and so for all practical purposes wouldn't I be another
person?  How do I know this hasn't happened already?  If it has, what
difference does it make?  Isn't it true that the only realities that
matter are the ones that make any difference to my reality?  (almost a
tautology)

Johnathan Corgan wrote:
> Brent Meeker wrote:
>
> >> These questions may reduce to something like, "Is there a lower limit to
> >> the amplitude of the SWE?"
> >>
> >> If measure is infinitely divisible, then is there any natural scale to
> >> its absolute value?
> >
> > I think it is not and there is a lower limit below which cross terms in the 
> > density
> > matrix must be strictly (not just FAPP) zero.  The Planck scale provides a 
> > lower
> > bound on fundamental physical values.  So it makes sense to me that treating
> > probability measures as a continuum is no more than a convenient 
> > approximation.  But
> > I have no idea how to make that precise and testable.
>
> Having measure ultimately having a fixed lower limit would I think be
> fatal to QTI.  But, consider the following:
>
> At every successive moment our measure is decreasing, possibly by a very
> large fraction, depending on how you count it.  Every moment we branch
> into only one of a huge number of possibilities.  A "moment" here is on
> the order a Planck time unit.
>
> So does this mean we run the risk of suddenly ceasing to exist, if our
> measure decreases past a lower limit simple due to the evolution of the SWE?
> 
> -Johnathan


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