As I perused the discussion it appears participants are puzzled about the mystery of existence i.e. us within the universe. I can't solve all the problems but can add to the chase. Firstly, we are within the universe and so be our observations/detections. Secondly since Einstein's special theory of relativity it has been understood that time and space are interwoven. There isn't any time outside of space. Space consists of at least the three common dimensions and time is the 4th (but it's not a spatial dimension). The fact that space/time is real has been proven numerous times (see Gravity Probe A experiment and the GPS corrections to the time variable which are needed to make it work; there are many more such as the impact of cosmic rays in Earth's upper atmosphere).
The inflationary hot Big Bang Model is successful in explaining several problems about the origin of the universe but it is still incomplete. It can't successfully explain how our universe emerged or by passed the initial singularity (a point of infinite energy and zero space/time volume). It's nonsense, yet here we sit. It may well be some other explanation can account for the singularity problem.
I will be writing a paper later this year to suggest a more reasonable alternative to the big bang genesis. See my website
http://antspub.com