I'll be away for a week so I expect this thread to be over (with no real progress to show for it) by the time I get back
quote:
2. What is there to equalize, i.e. an A and B, for a temporal expansion universe having no outside of and a finite past direction (abe: so as to render) it compatible to 2LoT?
So far as I can tell this seems to assume that all expansion is the equalisation of external and internal pressure (ignoring the role of internal forces- which, for instance, dominate the expansion of a star as it enters the Red Giant stage) - and state that as the 2LoT. While expansion to equalise external and internal pressure can be taken as an example of the 2LoT in action it would be utterly wrong to say that there is a law that all expansion must be due to the equalisation of internal and external pressure - let alone to confuse that bogus "law" with the 2LoT.
Here's a text on the 2LoT. Note the 3rd statement carefully, since it is the one that you have contradicted - and need to deal with if you wish to honestly claim that your "hypothesis" is consistent with the 2LoT.
The entropy change of any system and its surroundings, considered together, is positive and approaches zero for any process which approaches reversibility.
(Fully reversible processes are rare, so you cannot validly appeal to that as an escape. Any universe with an infinite past must either be radically different from ours, and be restricted to fully reversible processes for all but a finite period of the infinite past, or entropy will be maximised).