Some say that a writing is thinking, and if you're writing a short story, you're packing a thousand words into a single thought. Well, American writer, critic, and essayist Lorrie Moore says that every short story needs a point.
"The short story needs to get to the point or the question of the point or the question of its several points and then flip things upside down. It makes skepticism into an art form. It has a deeper but narrower mission than longer narratives, one that requires drilling down rather than lighting out. Like poetry, it takes care with every line. Like a play, it moves in a deliberate fashion, scene by scene. Although a story may want to be pungent and real and sizzling, still there should be as little fat as possible. In its abilities to stretch, move through time, present unexpected twists and shapes, the short story is as limber as Lycra but equally unforgiving."
It might be helpful, in the context of character development and worldbuilding, to capture the essence of the story's message in a piecemeal project.
More on "Why We Read and Write Short Stories": https://lithub.com/why-we-read-and-write-short-stories/