What are the unusual features of The Postmaster by Rabindranath Tagore?

I think that there are many unusual features of Tagore's
short story.  These help to contribute to its greatness.  One such feature is the
ending.  Tagore manages to make the reader feel a sense of disquietude amongst moral
ambiguity shrouded in uncertainty in the ending.  On one hand, there is a genuine hope
or belief in redemption or the Platonic "noble lie," that the Postmaster will come to
his senses and return to get Ratan and bring her with him.  There is a hope that this
will happen even in his mind.  Yet, he rationalizes his decision to do nothing and there
is a certain experience of feeling that the reader endures as a result.  It is easy to
criticize the Postmaster for his actions, yet Tagore might be suggesting that, to a
great extent, all human beings are guilty, on some level, of this.  At some point, we
all leave people that depend on us or have left people who possessed great feeling for
us.  Like the Postmaster, we, too, have rationalized this as being for the best.  While
we, as the reader, might be quick to throw stones at the Postmaster, one of Tagore's
great qualities and something unusual is that we are forced to confront both the
Postmaster and our own similar actions.

Another unusual
feature would be that the heroine of the short story, Ratan, for all practical purposes,
endures a suspended fate, to a great extent.  The reader is not necessarily certain as
to what is going to happen to this orphan.  On one hand, we know she is left behind. 
She has acquired a certain dignity with the beautiful and loyal manner she displayed to
the Postmaster.  Yet, we don't know exactly what is to become of her.  She stays on in
the village, and while we don't know her fate, perhaps, in a genius stroke, all we can
do is rationalize and conjecture, like the Postmaster, himself.  In another unusual and
brilliant move, Tagore reduces the reader to doing the same as the Postmaster regarding
Ratan.  It is his genius and an unusual feature to the short story to make the heroine
subject to wonderment by both her opposite in the story and the reader who reads
it.