@vectorcube,
vectorcube;79261 wrote:According to cosmological theories. The big bang (BB) is either
1. a non-event,
or
2 A event with t=0.
There is a difficulty with (2). On the one hand it seems to imply: "First there was no universe, then there was a universe", but on the other hand it denies the existence of time before BB. If there was no prior time, there was
never 'no universe'. Does it follow that, in some sense, the universe has 'always' existed?
Thinking about this more deeply, I wonder if a distinction can be made between 'chronological' time (in which BB happened, say, 14 billion years ago) and 'real' or 'experiencible' time (in which it happened infinitely long ago, i.e. it has always lain in the past). In other words, as one traces history back to the minus-14-billion year mark, equal chronological intervals contain a greater and greater number of events, so that no backward description of a physical sequence will ever lead all the way back to the BB itself.
I am not a scientist, and this is pure speculation on my part, but I would be interested in anyone's views on this.