Re: Closer To Truth interview

--- In [email protected], "hibbsa" <hibbsa@...> wrote:
>
> 
> 
> --- In [email protected], David Deutsch <david.deutsch@> wrote:
> >
> > 
> > On 8 May 2013, at 22:23, Steve <sonatine123@> wrote:
> > 
> > > Hello David
> > > 
> > > Thanks for this link - what an interesting website!
> > > 
> > > I have a question about one of your videos.  In 'Many Worlds Of Quantum Theory' you state a figure of 10 raised to 10 raised to the power of 23 as the number of histories involved when considering a cubic metre of air molecules.  How, in principle at least, is this figure derived ?
> > > 
> > > Incidentally I have read both of your books, and know a little about the 'Many Worlds Interpretaion' of quantum mechanics.
> > 
> > I can't remember the context in which I said that but it'll be something like this: 10^23 is the number of molecules in a mole (which actually occupies 22.4 litres, not a cubic metre, but never mind). If each molecule is in n different places at once, mostly uncorrelated with the others, then there are about n^(10^23) different histories under way. We can let n be 10 quite arbitrarily because with huge numbers like that, the topmost power is pretty much all that counts for purposes of envisaging it.
> > 
> > So it's a ballpark estimate raised to the power of a ballpark estimate raised to the power of a ballpark estimate.
> > 
> > -- David Deutsch
> >
> 
> Why don't these histories become fungible on a higher level?
>

Or maybe that's the answer for where your fungible worlds come from. The events with emergent properties in this universe (that by your own example, say, allow us to explain boiling water as always the) create a load of universes in your multiverse, but which end up being fungible up a level, which then provides that level with the materials allowing the higher level abstractions independence in their own right to influence reality (by differentiating in different directions)

Directions which within themselves involve a load more events that create a load more fungible universes, providing a new batch of material for the multiverse.