Bruno,

Not at all. Decoherence falsifies collapse. Decoherence falsifies many 
worlds. With decoherence everything is a wavefunction and those wave 
functions just keep on going and interacting in this single world.

Edgar



On Saturday, December 28, 2013 5:48:12 AM UTC-5, Bruno Marchal wrote:
>
>
> On 28 Dec 2013, at 01:51, Edgar L. Owen wrote:
>
> Jason,
>
> To address one of your points wavefunctions never collapse they just 
> interact via the process of decoherence to produce discrete actual 
> (measurable/observable) dimensional relationships between particles.
>
> Decoherence is a well verified mathematical theory with predictable 
> results, and the above is the reasonable interpretation of what it actually 
> does. In spite of what some believe, decoherence conclusively falsifies the 
> very notion of collapse.
>
>
> OK, but decoherence solve the problem in the Many-World picture. 
> Decoherence does not justify an unique physical universe. It explains only 
> why the universe seems unique and quasi-classical, and seems to pick the 
> position observable as important for thought process and measurement.
>
> Bruno
>
>
>
> Edgar
>
>
>
> On Friday, December 27, 2013 1:14:01 PM UTC-5, Jason wrote:
>
>
>
>
> On Fri, Dec 27, 2013 at 12:18 PM, Edgar L. Owen <edga...@att.net> wrote:
>
> Jason,
>
> Neither of the first 2 points you make here seem correct to me but you 
> don't express them clearly enough for me to know why you are saying what 
> you are saying.
>
> As to the first point, the present moment is self-evident direct 
> experience 
>
>
> Do you think the present moment is the only point in time to exist, to the 
> exclusion of all others?  If so, please explain how this is self-evident.
>  
>
> whereas wave function collapse is an outlandish interpretation of quantum 
> equations which has no basis at all in direct experience, 
>
>
> I agree with this.  But then why isn't it also "outlandish" to presume 
> past moment's in time must cease to exist, just because we are not in them? 
> It seems to be a needless addition to the theory (just like wave function 
> collapse), to keep our concept of what is real, limited to that which we 
> are aware of from our particular vantage point.
>
> To be clear, the collapse theories say that even though the equations of 
> quantum mechanics predict multiple outcomes for measurements, they suppose 
> that those other possibilities simply disappear, because we (from our 
> vantage point in one branch) did not experience those other vantage points 
> in other branches. Hence they presume only one is reified, to the exclusion 
> of all others. This "us-centered" thinking is how I see presentism. It says 
> that only one point in time is reified, to the exclusion of all others.
>  
>
> or in quantum theory = the actual equations.
>
>
> If you believe quantum theory is based entirely on the actual equations 
> (e.g. the Schrodinger equation), this leads naturally to many-worlds. It is 
> only by added additional postulates (such as collapse) that you can hope to 
> restrict quantum mechanics to a single world. All attempts at this which I 
> have seen seem ad hoc and completely unnecessary.
>  
>
> Anyway the theory of decoherence put wave function 
>
> ...

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