Some ideas re histories and universes:

1) Definitions:

Universe:  A universe is defined by its current state.

Identifiable past history: The prior state can be fully determined from the 
current state.

Identifiable future history: The next state can be fully determined by the 
current state.

2) If a universe has an identifiable past history associated with it then 
there is a halting algorithm that allows that identification 
decision.  This algorithm must be able to check that past history and to do 
so it must be able to compute that past history given the current state as 
data.

3) This same algorithm may or may not be able to compute the future history 
of such a universe because the universe's rules of state succession may 
change or acquire some degree of "do not care" i.e. develop a random 
content allowing in true noise as a result of the state shift.

4) If a universe does not have an identifiable past history but 
nevertheless has evolved then it has a past history but there is no 
algorithm that can compute it.  Such a universe must currently have rules 
of state succession that allow in some degree of true noise.

5) There can at most be a countable infinity of universes with identifiable 
and thus computable past histories, future histories, or both because that 
is the limit on the number of halting algorithms.

6) On the other hand there can be an uncountable infinity of universes that 
have unidentifiable and thus uncomputable past and future histories.

7) Universes which always have identifiable past histories and/or future 
histories even if only countably infinite in number represent information 
in the Everything as they require it to contain a computer - a UTM - that 
has a parsed application - a selection.  However the Everything has no 
information - no selection - so such universes are not present.  The 
Everything can contain a UTM if universes with identifiable past histories 
act as seeds for universes that have unidentifiable past histories.  In 
effect the UTM [or UD] spawns Big Bangs [in my model isomorphic links or 
interpretations] which then evolve with true noise input.  This transition 
to having a true noise input converts their identifiable past history into 
an unidentifiable one and they thus join the uncountable number of 
universes with unidentifiable past and future histories - those whose rules 
of state succession require true noise input.

Hal

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