The Raven darkness. The use of the raven—the "devil bird"—also suggests this. This devil image is emphasized by the narrator's belief that the raven is "from the Night's Plutonian shore", or a messenger from the afterlife, referring to Pluto, the Roman god of the underworld (also known as Dis Pater in Roman mythology). A direct allusion to Satan also appears: "Whether Tempter sent, or whether tempest tossed thee here ashore..." Poe chose a raven as the central symbol in the story because he wanted a "non-reasoning" creature capable of speech. He decided on a raven, which he considered "equally capable of speech"
The Nine Billion Names of God is completed, God will bring the Universe to an end. Three centuries ago, the monks created an alphabet in which they calculated they could encode all the possible names of God, numbering about 9,000,000,000 ("nine billion") and each having no more than nine characters. Writing the names out by hand, as they had been doing, even after eliminating various nonsense combinations, would take another 15,000 years; the monks wish to use modern technology to finish this task more quickly. They rent a computer capable of printing all the possible permutations, and they hire two Westerners to install and program the