Respuesta :
What the reader can learn is the point of view of all the characters because it shows what they are thinking in their minds and what they are doing.
Answer: The reader can get an insight of what some of Mrs. Windermere’s guests are thinking and feeling.
Explanation: Just to elaborate a little on the answer, it can be added that by employing an omniscient ("all-knowing") literary technique, the author grants the reader the opportunity to enter the minds of the characters, since only he or she has that "privileged" information. By doing so, he or she allows the reader to connect more effectively with the characters. In addition, it makes the story more interesting. That's why we learn that, over dinner, one of them mentally counted the number of fish paintings in the room, while another felt pleasure when his bare foot touched the carpet.