In "White Hills Like Elephants," how does Hemingway's style serve to establish the tone of each speaker?

The point of view used
in this story is the third-person objective. This means that the narrator is neither a
participant in the story's events nor does he or she tell us what any of the characters are
thinking or feeling; this narrator can only tell us what would be observable by us, were we
there too (this is the "objective" part of the point of view). Rather than tell us
that the characters feel awkward or tense, then, the narrative makes us have to pick up on it
ourselves. The characters's speech is short, and they never actually name what it is they seem
to be discussing: an abortion for Jig who is, apparently, pregnant. These facts provide clues
for us. The point of view...