Let us think of the universe as a loop. Is it static or is it looping dynamically like say a Catherine wheel. The same question applies to a loop as it does to any universe. What keeps it dynamic. Why is work possible.
Relativity implies that time is a block - if it's a loop, all parts of the loop are there, and it's our understanding that is dependent upon its location in that time-space to give the impression of 'before' and 'after'.
Scientifically how would infinite expansion affect circularity.
If it's only space which is expanding it would have no effect on the time component, as the dimensions are orthogonal to each other.
Then of course we have the same issue of why something and not nothing.
If we have looped time we don't have that issue, there was never nothing.
O.