On 25 Feb 2015, at 02:05, Bruce Kellett wrote:
LizR wrote:
On 25 February 2015 at 10:52, Bruce Kellett <[email protected]
<mailto:[email protected]>> wrote:
LizR wrote:
On 24 February 2015 at 14:23, meekerdb <[email protected]
<mailto:[email protected]> <mailto:[email protected]
<mailto:[email protected]>>> wrote:
And I don't see anything incoherent about true
randomness. We seem
to have done well with it for a century. If you can
accept
randomness due to ignorance which can never be informed,
why not
inherent randomness.
It is of course possible that the universe works on "oracles"
like this, this is just my personal bias towards explanations
that don't require infinite amounts of "in-principle
unknowable"
data to be injected into physics. But I admit I could be wrong
to have that bias.
You must have difficulty with quantum mechanics, then. QM is built
on a lot of "in-principle unknowable" data. Hidden variable
theories
of QM do not really work, so that in radioactive decay, for
instance, the time of any particular decay, and whatever it
might be
that caused that nucleus to decay now rather than at some other
time, is "in-principle unknowable".
MWI simply formalizes the fact that such data are "in-principle
unknowable".
It seems to me that the MWI explains, in principle, where the data
come from - from first person indeterminacy. That isn't the same as
spontaneous generation of random data from nowhere.
First person indeterminacy is just another name for "in-principle
unknowable"!
Not exactly. FPI entails that a first person (plural) result of an
experiment is non predictible (in principle unknowable) in a purely
deterministic context, without involving something a priori unknowable
(like with the non valid invocation to the God of the gap).
But "in principle unknowable" is something much larger and fuzzy than
the FPI of the UDA, or the mathematical measure of the Arithmetical
UDA (AUDA, the machine's interview in sane04).
So:
FPI -> unknowable in principle (without magic)
unknowable in principle (with or without magic) does not imply FPI
Bruno
Bruce
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