Re: FPI possible continuations

2015-07-23 Thread Bruno Marchal


On 22 Jul 2015, at 20:59, Terren Suydam wrote:




On Tue, Jul 21, 2015 at 9:27 AM, Bruno Marchal marc...@ulb.ac.be  
wrote:


On 20 Jul 2015, at 21:40, Terren Suydam wrote:


Question for Bruno or anyone else:

Let's say I see a UFO. There are potentially many competing  
explanations for what I saw. Does FPI entail that all of them could  
be a continuation from my current state, so long as the explanation  
robustly produces the phenomena I experienced?


FPI requires that all of them need to be taken into account to  
evaluate what happens next. But some explanation might correspond  
to very rare computations, other might be more numerous.



So this is one way in which FPI differs from Many Worlds QM  
scenarios, because in those scenarios, the splitting is the result  
of divergence from a common physical reality, whereas FPI  
indeterminacy is the result  of divergence from a common  
phenomenological reality.


Well said.

This does not change the fact that the Everett-QM indeterminacy is a  
particular case of the first person indeterminacy, as I think you  
agree, with Quentin and me and others.


Eventually, if comp is true, the first one (the result of divergence  
from a common physical reality) must be explain through the second one  
(the result of phenomenological divergence, common for the guy before  
the split).


All right? (this of course use step 7, and is not relevant at step 3)

Bruno





Terren




In other words, so long as what I experience is identical, relative  
to each possible explanation of the phenomena (e.g. aliens /  
military prototype / atmospheric disturbance / holographic  
projection / etc), does that not entail computational equivalence  
among the potential continuations, even if the measure would differ  
among them?  Is my ongoing experience the only thing that matters  
when it comes to the set of the infinite computations going  
through my state?  If not, what principle could rule out a  
particular explanation despite it potentially being able to produce  
identically the phenomena in my experience (UFO)?


Nothing is ruled out, but statistically, the computations which have  
a bigger measure will be more probable.


If you see a UFO, may be there is a UFO in the normal physical  
reality. That means that in all normal computations an UFO is there.  
Then that UFO is multiplied along all things which multiply you. You  
will be (comp)-entangled to it. For example, there will be as much  
UFO than there are equivalent (from your 1p pov) position of  
electron possible in your body (already a continuum if we postulate  
classical QM (and thus that QM is the solution of the FPI). Or the  
UFO belongs to a normal dream, in which case you will wake up, in  
the normal histories. Or the UFO is based on more rare computations,  
and the probability that you belong to them will drop down. Naively,  
what you expect is determined by the mass of computations going  
through your state. Although the rare experience seems as much real  
than the normal one, they are relatively rare. Even if you find  
yourself in one, from there you should bet on the normal  
continuations starting from that non normal situation. Similarly,  
you should never bet on a non normal computation, unless you die or  
are on drugs.


Basically it is like the lottery: you should not expect to win the  
biggest gain, despite you cannot rule out the possibility.


In our case, all finite computations may be ruled out, as they have  
a (naive) measure null, compared to infinite computations multiplied  
by (dovetailing on) the real numbers. Empirically Nature used a  
random oracle to get that self-multiplication right, and we can  
expect this to be proved necessary for the comp-measure measure.


Now, that reasoning is a bit naive, and it is virtually impossible  
to count the computations, or even to recognize them in some 3p  
way. It can be proved easily that most computations cannot have  
their semantic extracted mechanically from the code of the program  
doing them, and that is why I handle the math of the measure in an  
indirect way from the logic of self-reference.



Bruno





Terren





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Re: FPI possible continuations

2015-07-22 Thread Terren Suydam
Hi John,

I don't mean to signify any particular ontological commitments when I refer
to UFOs or any other feature of our experience. I'm comfortable with the
uncertainty entailed by the skeptic's position. At the end of the day if we
want to communicate, we need to use a shared language that hopefully
activates in the listener the concepts we are trying to communicate.

For the question I asked, it's not important whether those features of
reality are really there, only that they present to our experience in
identical ways; so this would allow dreams, hallucinations, and so on, as
well as the features we take for granted as being real in the sense of
being independently verifiable (in principle if not in practice).

Terren

On Mon, Jul 20, 2015 at 10:01 PM, John Mikes jami...@gmail.com wrote:

 Hi Terren,
 so you think there ARE UFOs? just as you think there are those other
 features you mentioned (or even Telmo's Mongol invasions?)
 I could question TIME as well (Quentin) in my agnosticism.
 Our knowable(??) world/science is flexible and creative.
 I would not mix it up with 'reality' what we cannot know for sure.
 (Please, consider the English ambiguity in this last sentence:
 A. We cannot know for sure WHAT reality is,  -  or  -
 B. I cannot mix up time and the other items with reality. )

 John Mikes

 On Mon, Jul 20, 2015 at 3:40 PM, Terren Suydam terren.suy...@gmail.com
 wrote:

 Question for Bruno or anyone else:

 Let's say I see a UFO. There are potentially many competing explanations
 for what I saw. Does FPI entail that all of them could be a continuation
 from my current state, so long as the explanation robustly produces the
 phenomena I experienced?

 In other words, so long as what I experience is identical, relative to
 each possible explanation of the phenomena (e.g. aliens / military
 prototype / atmospheric disturbance / holographic projection / etc), does
 that not entail computational equivalence among the potential
 continuations, even if the measure would differ among them?  Is my ongoing
 experience the only thing that matters when it comes to the set of the
 infinite computations going through my state?  If not, what principle
 could rule out a particular explanation despite it potentially being able
 to produce identically the phenomena in my experience (UFO)?

 Terren





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Re: FPI possible continuations

2015-07-22 Thread Terren Suydam
On Tue, Jul 21, 2015 at 9:27 AM, Bruno Marchal marc...@ulb.ac.be wrote:


 On 20 Jul 2015, at 21:40, Terren Suydam wrote:

 Question for Bruno or anyone else:

 Let's say I see a UFO. There are potentially many competing explanations
 for what I saw. Does FPI entail that all of them could be a continuation
 from my current state, so long as the explanation robustly produces the
 phenomena I experienced?


 FPI requires that all of them need to be taken into account to evaluate
 what happens next. But some explanation might correspond to very rare
 computations, other might be more numerous.


So this is one way in which FPI differs from Many Worlds QM scenarios,
because in those scenarios, the splitting is the result of divergence from
a common physical reality, whereas FPI indeterminacy is the result  of
divergence from a common phenomenological reality.

Terren




 In other words, so long as what I experience is identical, relative to
 each possible explanation of the phenomena (e.g. aliens / military
 prototype / atmospheric disturbance / holographic projection / etc), does
 that not entail computational equivalence among the potential
 continuations, even if the measure would differ among them?  Is my ongoing
 experience the only thing that matters when it comes to the set of the
 infinite computations going through my state?  If not, what principle
 could rule out a particular explanation despite it potentially being able
 to produce identically the phenomena in my experience (UFO)?


 Nothing is ruled out, but statistically, the computations which have a
 bigger measure will be more probable.

 If you see a UFO, may be there is a UFO in the normal physical reality.
 That means that in all normal computations an UFO is there. Then that UFO
 is multiplied along all things which multiply you. You will be
 (comp)-entangled to it. For example, there will be as much UFO than there
 are equivalent (from your 1p pov) position of electron possible in your
 body (already a continuum if we postulate classical QM (and thus that QM is
 the solution of the FPI). Or the UFO belongs to a normal dream, in which
 case you will wake up, in the normal histories. Or the UFO is based on more
 rare computations, and the probability that you belong to them will drop
 down. Naively, what you expect is determined by the mass of computations
 going through your state. Although the rare experience seems as much real
 than the normal one, they are relatively rare. Even if you find yourself in
 one, from there you should bet on the normal continuations starting from
 that non normal situation. Similarly, you should never bet on a non normal
 computation, unless you die or are on drugs.

 Basically it is like the lottery: you should not expect to win the biggest
 gain, despite you cannot rule out the possibility.

 In our case, all finite computations may be ruled out, as they have a
 (naive) measure null, compared to infinite computations multiplied by
 (dovetailing on) the real numbers. Empirically Nature used a random oracle
 to get that self-multiplication right, and we can expect this to be proved
 necessary for the comp-measure measure.

 Now, that reasoning is a bit naive, and it is virtually impossible to
 count the computations, or even to recognize them in some 3p way. It can
 be proved easily that most computations cannot have their semantic
 extracted mechanically from the code of the program doing them, and that is
 why I handle the math of the measure in an indirect way from the logic of
 self-reference.


 Bruno




 Terren





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Re: FPI possible continuations

2015-07-21 Thread Bruno Marchal


On 20 Jul 2015, at 21:40, Terren Suydam wrote:


Question for Bruno or anyone else:

Let's say I see a UFO. There are potentially many competing  
explanations for what I saw. Does FPI entail that all of them could  
be a continuation from my current state, so long as the explanation  
robustly produces the phenomena I experienced?


FPI requires that all of them need to be taken into account to  
evaluate what happens next. But some explanation might correspond to  
very rare computations, other might be more numerous.





In other words, so long as what I experience is identical, relative  
to each possible explanation of the phenomena (e.g. aliens /  
military prototype / atmospheric disturbance / holographic  
projection / etc), does that not entail computational equivalence  
among the potential continuations, even if the measure would differ  
among them?  Is my ongoing experience the only thing that matters  
when it comes to the set of the infinite computations going through  
my state?  If not, what principle could rule out a particular  
explanation despite it potentially being able to produce identically  
the phenomena in my experience (UFO)?


Nothing is ruled out, but statistically, the computations which have a  
bigger measure will be more probable.


If you see a UFO, may be there is a UFO in the normal physical  
reality. That means that in all normal computations an UFO is there.  
Then that UFO is multiplied along all things which multiply you. You  
will be (comp)-entangled to it. For example, there will be as much UFO  
than there are equivalent (from your 1p pov) position of electron  
possible in your body (already a continuum if we postulate classical  
QM (and thus that QM is the solution of the FPI). Or the UFO belongs  
to a normal dream, in which case you will wake up, in the normal  
histories. Or the UFO is based on more rare computations, and the  
probability that you belong to them will drop down. Naively, what you  
expect is determined by the mass of computations going through your  
state. Although the rare experience seems as much real than the normal  
one, they are relatively rare. Even if you find yourself in one, from  
there you should bet on the normal continuations starting from that  
non normal situation. Similarly, you should never bet on a non normal  
computation, unless you die or are on drugs.


Basically it is like the lottery: you should not expect to win the  
biggest gain, despite you cannot rule out the possibility.


In our case, all finite computations may be ruled out, as they have a  
(naive) measure null, compared to infinite computations multiplied by  
(dovetailing on) the real numbers. Empirically Nature used a random  
oracle to get that self-multiplication right, and we can expect this  
to be proved necessary for the comp-measure measure.


Now, that reasoning is a bit naive, and it is virtually impossible to  
count the computations, or even to recognize them in some 3p way. It  
can be proved easily that most computations cannot have their semantic  
extracted mechanically from the code of the program doing them, and  
that is why I handle the math of the measure in an indirect way from  
the logic of self-reference.



Bruno





Terren





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Re: FPI possible continuations

2015-07-20 Thread Quentin Anciaux
Le 20 juil. 2015 23:14, Telmo Menezes te...@telmomenezes.com a écrit :

 Hi Terren,

 I won't try to answer but instead increase the scope of the question.
Could it also apply to the past? Could there be many (infinite?) possible
histories that lead to the current state of affairs, but until you learn
about, say, the Mongol invasions then the Mongol invasions are just a
possibility?

I think it is, as measure is a relative thing,  it echoes also the memory
erasure experiment that Saibal Mitra I think once told.

So yes any moment has multiple past as well as multiple futures.

Whatever the relative measure of each, each moment is as real as any other.

Quentin

 Cheers,
 Telmo.

 On Mon, Jul 20, 2015 at 9:40 PM, Terren Suydam terren.suy...@gmail.com
wrote:

 Question for Bruno or anyone else:

 Let's say I see a UFO. There are potentially many competing explanations
for what I saw. Does FPI entail that all of them could be a continuation
from my current state, so long as the explanation robustly produces the
phenomena I experienced?

 In other words, so long as what I experience is identical, relative to
each possible explanation of the phenomena (e.g. aliens / military
prototype / atmospheric disturbance / holographic projection / etc), does
that not entail computational equivalence among the potential
continuations, even if the measure would differ among them?  Is my ongoing
experience the only thing that matters when it comes to the set of the
infinite computations going through my state?  If not, what principle
could rule out a particular explanation despite it potentially being able
to produce identically the phenomena in my experience (UFO)?

 Terren





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Re: FPI possible continuations

2015-07-20 Thread Telmo Menezes
Hi Terren,

I won't try to answer but instead increase the scope of the question. Could
it also apply to the past? Could there be many (infinite?) possible
histories that lead to the current state of affairs, but until you learn
about, say, the Mongol invasions then the Mongol invasions are just a
possibility?

Cheers,
Telmo.

On Mon, Jul 20, 2015 at 9:40 PM, Terren Suydam terren.suy...@gmail.com
wrote:

 Question for Bruno or anyone else:

 Let's say I see a UFO. There are potentially many competing explanations
 for what I saw. Does FPI entail that all of them could be a continuation
 from my current state, so long as the explanation robustly produces the
 phenomena I experienced?

 In other words, so long as what I experience is identical, relative to
 each possible explanation of the phenomena (e.g. aliens / military
 prototype / atmospheric disturbance / holographic projection / etc), does
 that not entail computational equivalence among the potential
 continuations, even if the measure would differ among them?  Is my ongoing
 experience the only thing that matters when it comes to the set of the
 infinite computations going through my state?  If not, what principle
 could rule out a particular explanation despite it potentially being able
 to produce identically the phenomena in my experience (UFO)?

 Terren





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FPI possible continuations

2015-07-20 Thread Terren Suydam
Question for Bruno or anyone else:

Let's say I see a UFO. There are potentially many competing explanations
for what I saw. Does FPI entail that all of them could be a continuation
from my current state, so long as the explanation robustly produces the
phenomena I experienced?

In other words, so long as what I experience is identical, relative to each
possible explanation of the phenomena (e.g. aliens / military prototype /
atmospheric disturbance / holographic projection / etc), does that not
entail computational equivalence among the potential continuations, even if
the measure would differ among them?  Is my ongoing experience the only
thing that matters when it comes to the set of the infinite computations
going through my state?  If not, what principle could rule out a
particular explanation despite it potentially being able to produce
identically the phenomena in my experience (UFO)?

Terren

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Re: FPI possible continuations

2015-07-20 Thread John Mikes
Hi Terren,
so you think there ARE UFOs? just as you think there are those other
features you mentioned (or even Telmo's Mongol invasions?)
I could question TIME as well (Quentin) in my agnosticism.
Our knowable(??) world/science is flexible and creative.
I would not mix it up with 'reality' what we cannot know for sure.
(Please, consider the English ambiguity in this last sentence:
A. We cannot know for sure WHAT reality is,  -  or  -
B. I cannot mix up time and the other items with reality. )

John Mikes

On Mon, Jul 20, 2015 at 3:40 PM, Terren Suydam terren.suy...@gmail.com
wrote:

 Question for Bruno or anyone else:

 Let's say I see a UFO. There are potentially many competing explanations
 for what I saw. Does FPI entail that all of them could be a continuation
 from my current state, so long as the explanation robustly produces the
 phenomena I experienced?

 In other words, so long as what I experience is identical, relative to
 each possible explanation of the phenomena (e.g. aliens / military
 prototype / atmospheric disturbance / holographic projection / etc), does
 that not entail computational equivalence among the potential
 continuations, even if the measure would differ among them?  Is my ongoing
 experience the only thing that matters when it comes to the set of the
 infinite computations going through my state?  If not, what principle
 could rule out a particular explanation despite it potentially being able
 to produce identically the phenomena in my experience (UFO)?

 Terren





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