"In writing, the sender and receiver are separated. This means that all those little feedback signals a speaker gets from a listener are eliminated. Nods, smiles, "uh-huhs," "unh-uhs," eyes open wide or glazed over, frowns -- all these signals and many more have disappeared. The writer is alone, with a single channel of communication. What he or she fails to make clear will remain confused until doomsday, because no questions can be asked of a written document" (Scholes and Comley 11).