with time going infinite in two directions, everything and anything has already happened, and will happen a thousand times over.
That's how I felt on shrooms one time, they told me humans had no control and that everything was fate. Only it wasn't just a theory but a perceptive reality, in that state of mind at least. Hallucinogenic drug induced or not it is interesting to think about but comes down to conjecture in our hands.
When I was in highschool chemistry the teacher showed us a video about 'string theory'. It is an attempt by the worlds greatest minds to create a fundamental theory of everything.