What precise function has the open window in "The Open Window"?

What precise function has the open window in “The Open Window”?

What precise function has the open window in “The Open Window”?

What precise function has the open window in “The Open Window”?
The open window is what Vera seizes upon to trick the poor unsuspecting Framton Nuttel when she is left to entertain him by herself while her aunt is preparing herself. Note how she uses it to weave an elaborate story that the gullible Mr. Nuttel completely swallows:”You may wonder why we keep that window wide open on an October afternoon,” said the niece, indicating a large French window that opened on to a lawn.She goes on to tell Mr. Nuttel how the window is kept open for the supposedly dead husband and two younger brothers of Vera’s aunt to return, completely setting the stage for their actual return and the hasty departure of Mr. Nuttel.However, more than this, the open window seems to be related to one of the possible messages of the short story. The window in its very openness reflects both Mr. Nuttel and Vera’s aunt and family in their willingness to be deceived and misled by somebody with Vera’s skill and perspicacity. It seems that the story contains a warning – are we “open windows” to those such as Vera, to be played with and tricked and deceived, even in jest, or are we able to discern the truth?