# Re: tautology

From: Jacques M. Mallah <jqm1584.domain.name.hidden>
Date: Mon, 22 Nov 1999 17:13:35 -0500 (EST)

On Mon, 15 Nov 1999, Russell Standish wrote:
> > Given the measure distribution of observation-moments, as a
> > function on observables (such as Y1 and X),
> > p(Y1|X) = p(Y1 and X) / p(X)
> > Not so hard, was it?
> > [Note that here X was the observation of being Jack Mallah, and
> > Y1 was basically the observation of being old. See previous posts on
> > this thread if you want exact details of Y1; nothing else about it is
> > relevent here I think.]
>
> ASSA doesn't give p(Y1 and X) either.

Obviously, and as I've repeatedly said, some prescription for the
measure distribution is also needed. That is true even to just get p(X).

> > Huh? Why should p(not Y1, and X) = 0 ? Especially since my
> > current observations are (not Y1, and X)!!!
>
> Your current observations are [sic] p(Y3|X), where Y3 = Jacques Mallah's
> is observed to be young. Y3 is not equivalent to (not Y1). Just because
> you see yourself young does not preclude seeing yourself old at a
> later date!

Here your misunderstanding is clearly exposed. The way I've
defined p(A), it is the effective probability of an observation-moment
with the property 'A'.
Definitions of identity, of 'me' or 'not me', are irrelevant to
finding p(A). By definition, if my current observation is A, and A and B
are such that it is not possible for the same observation-moment to have
both, then I observe (not B).
If you want to talk about the probability that, using some
definition of identity that ties together many observation moments, "I"
will eventually observe Y1 - that will depend on the definition of
identity. It is NOT what I have been talking about, nor do I wish to talk
about it until you understand the much more basic concept of the measure
of an observer-moment.

- - - - - - -
Jacques Mallah (jqm1584.domain.name.hidden)
Graduate Student / Many Worlder / Devil's Advocate
"I know what no one else knows" - 'Runaway Train', Soul Asylum
My URL: http://pages.nyu.edu/~jqm1584/
Received on Mon Nov 22 1999 - 14:52:58 PST

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