Usher Edgar Allan Poe The - Всегда новые скидки и акции.
One reason could be, because it would lead the narrator to believe that the raven spoke from wisdom, and was not just repeating its only "stock and store," and to signify the scholarship of the narrator.
The Raven: Edgar Allan Poe - Summary and Critical Analysis
This also seems to be what Viktor Rydberg believes when he is translating "The Raven" to Swedish, since he uses the phrase "årets sista natt var inne, " ("The last night of the year had arrived").
In "The Raven" it is important that the answers to the questions are already known, to illustrate the self-torture to which the narrator exposes himself.