The focus shifts by replacing the sender-message-channel-receiver model with an alternative: author-text-reader. The change may seem only cosmetic. After all the author is the sender, the message is in the text, and the receiver is the reader. But literary theorists analyze the model differently. A key question revolves around the issue of where ultimate authority or truth lies. Traditionally, one assumes that the author of a work is the ultimate authority. If anyone knows the "truth," surely it is the author. But it quickly becomes clear that there are situations where authorial intent is not enough. For example, in the most extreme case, the author may now be dead, making it impossible to ask the author what was meant by a particular phrase. Or the author may not be reachable, or may have written the text in a different context.