On 11 Feb 2013, at 20:12, meekerdb wrote:
On 2/11/2013 8:52 AM, John Clark wrote:
And you keep thinking there is such a thing as "THE" first person
view, and that might be a OK approximation in a world without
duplicating machines but not in a world that has them; there is
only A first person view and one view is every bit as legitimate as
another. And the only thing that turns one first person view into
another first person view is what they view, so all you're saying
is that the guy who sees Washington will be the guy who sees
Washington which is too flimsy to build a philosophy on.
Similarly there is no such thing as "the" result of an observation
of a quantum observable that is not already prepared in an
eigenstate of that observable.
Why? If I look to an up+down electron in the {up, down} base, *the*
result will be 'up' or will be 'down'.
From my perspective I am not certain of which result I will get, but
the result of the observation will be quite definite. That's why
quantum mechanician, like the comp predictors, introduces
probabilities. Uncertain does not mean vague. (That's a common
confusion).
Bruno
http://iridia.ulb.ac.be/~marchal/
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