The Top 40

Most people think time flows, in a forward direction, because that is how their life is and every other life they see.
A beginning, a middle, and an end. Flow. Time.

Think of a lemon meringue pie sitting on the table.
A female gnat lands on the pie and becomes trapped in the meringue.
It flutters, and mills about but it can never leave the sticky meringue prison, then it dies.
Beginning, middle, end.

In the middle though the female gnat lays it's eggs which then hatch and the new gnats are trapped in the meringue.
Like their parent they flutter and mill about but they too die in the meringue, some leaving eggs behind.
Their lives have a beginning, middle and end and to them this is time.

Their lives are not time.
The meringue is time.
There is no beginning, middle or end to the meringue.
It just is.

Therefore it is never possible to "go back in time" or go ahead into the future, as all of time is already here, all around you.

The only thing that makes time seem as if it is flowing is the birth and death of others.

If there were no births and deaths time would no longer have a flow, or meaning, it would just be. Or not.

Time is only a human mind construct created to make sense of the birth-death paradigm.