The train not standing...

The train you travel in arrives -
or it does not arrive - at a small wayside station,
and comes to a stop - or, not having arrived,
it does not stop. If it stops,
there will be people boarding it
and there will be others alighting - or
maybe there will be no-one getting on
and no-one getting off the train.
And it is possible that the train will not go on,
having for the moment nowhere to go, nowhere to get to.
If it does not stop and does not go on, it will not exist.
That seems self-evident. And that being so,
what then will become of you and all the other passengers?
How will you justify your existence?
Or will you, too, have ceased to exist?
Can you exist in a train that does not exist?
Can a train that does not exist hold you? Is it
germane to ask whether the non-existent train
in which you are or you are not travelling
is stationary or is moving as a train should? If, indeed,
you have ceased to exist, then how is the train to reappear?
And where? And under what circumstances?
And yourself: under what circumstances
might you reappear, with or without the train?
Why have you never thought about these things before?