‘Causality’, or what is also known as ‘cause and effect’, is not a physical thing in itself. ‘Causality’ is a word used by human beings to describe the action/reaction process, which is continual, or is a forever-continual link that could not begin and does not end. So, there is NO end, and there was NO beginning.
There is only NOW, and from which ALL is being created, or ‘in Creation’. Creation is a constantly-changing process, which ‘has’ and ‘will’ always happen and occur in the eternal-NOW.
Creation, Itself, is just the process, also known as, ‘every action has a reaction’, which every reaction being creation, itself.
The Universe, at the fundamental and every level, is made up of two things, one known as ‘matter’, the other known as ‘space’. It is sometimes said that an atom is made up of 99.99% ‘space’. This ‘space’, from the smallest piece or ‘particle’ of ‘matter’ to the largest ‘object’ of ‘matter’ has ‘space’ between them all and around all of them. It is this ‘space’, or ‘distance’, itself, between and around ‘matter’ that allows ‘matter’ to move about absolutely freely. The movemen to ‘matter’ allows it to interact with itself, and every action of ‘matter’ interacting with itself causes ‘the creation’ of something new.
Every newly created ‘thing’ then is continually evolving, or in simpler terms is ‘continually changing’, due to the fact that ‘it’ is always ‘interacting’, or ‘reacting’, with other ‘things’, which also with every one of those interacting actions another reaction occurs, with again each new one causing a newly created thing, or a new creation. There is and was no beginning nor end to the always-evolving-creation process.
What is called and labelled with and as the ‘big bang’, which is also known as ‘singularity’, is, again, just the 'infinite compression of ‘matter’, which, again, is just the removal of any and all ‘space’ within a peice of ‘matter’. Remember, ‘singularity’ is said to be both and ‘the end’ of a black hole, and, at ‘the beginning’ of the Universe. But which some people ‘now’ say and call ‘a universe’.
To explain both ‘the Universe’, when defined as Everything; All there is, Totality, and, ‘a universe’ (in a ‘multiverse’ scenario, which ‘we’ will have to find a ‘new term or word’ that has the Everything, All there is, Totality definition), then, if there are more than ‘one universe’ when ‘singularity’ at ‘the end’ of one black hole ‘goes bang’, or more correctly ‘expands’, but not like the ‘big bang’, then this happens and occurs still within the infinite and eternal Everything; All there is; Totality.. Whereas, if people still want to ‘try to’ claim that Everything; All there is; Totality all began and started at or with a ‘big bang’, then this is NOT any so-called ‘first cause’ NOR ‘in the beginning’ that was said to have created the Universe, all at once, but was also just ‘another bang’ or ‘expansion’, but this time was at or when a ‘black hole’ had attracted EVERY piece or particle of ‘matter’, compressed ALL the ‘space’, or ‘distance’, from within, outwards, so that there was only One single piece of ‘matter’, which had to be surrounded by (a) ‘space’, again which went on infinitely spatially, so that ‘the expansion’ of ‘that matter’ could happen and occur.
Obviously, there ‘has to be’ some ‘thing’ for ‘a bang’ and/or for ‘an expansion’ to happen and occur, and when the ‘Universe’ word is being defined as, Everything, All there is, Totality, whatever ‘that’ was, which is sometimes referred to and called ‘singularity’, HAS TO BE a part of the Unverse, Itself.
At ‘that moment’ of ‘bang or expansion’, and there was only One ‘singularity’ only, then the Universe, as it always IS, having ‘matter’ and ‘space’ co-existing together always, was just one singular piece of ‘matter’, of some size or dimension, surrounded by ‘space’, or a ‘distance’, that went on forever. Now, the reason there was it is said there was no ‘before’ or no ‘time’ before the Universe was created, all at once, is because ‘time’, like ‘causality’, is NOT an actual physical thing but is ‘a word’ denoting the ‘duration between, perceived, events’. And, when there is only ‘one physical thing’, a ‘one piece of matter’ only, then, in this scenario, NO events could be taking place or occuring.
‘Duration’, itself, needs at least two physical things, and even if only two physical things existed, then working out ‘duration’, ‘or telling the time’, would, still, be impossible.
To be able to, what is called, ‘tell the time’, or work out ‘the duration’, light is needed. And, at ‘singularity’ there is NO light. As well as the Fact that there is only One physical thing, only.
‘Causality’, itself, like ‘time’, itself, both exist in ‘concept’ or in ‘the mental’ only. Although they are words used to help in describing the objective features of ‘Reality’, Itself.