E = mc2 is a conservation law but not necessarily an equivalence law.
The debate on blackholes not destroying information hinges on space
travelling faster than light - so light in it can't escape.  Some of
our equations (Neil Turok) have it that only quantum fluctuations
survive the big crunch.  I am not sure the laws of ohysics prove
information is not destroyed.

On Apr 7, 5:57 am, "[email protected]" <[email protected]>
wrote:
> The Physics of Information
> F. ALEXANDER BAIS AND J. DOYNE FARMER
>
> The notion of information as used by Shannon is a generalization of
> the notion
> of entropy, which _rst appeared in thermodynamics.
>  In thermodynamics entropy is an abstract quantity depending on heat
> and
> temperature whose interpretation is not obvious.
>  . . . .
>  It turns out that the concept of entropy or equivalently information
> is useful
> in many applications that have nothing to do with physics
> .http://arxiv.org/pdf/0708.2837v2.pdf
>
> =====.
> #
> The mathematician  John von Neumann said to
> "the father of information theory" Claude Shannon:
>  " Name it "entropy"  then in discussions
>  you will receive solid advantage, because
> nobody knows, what "entropy"  basically is ".
> ==========..

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