An adequate theory of reading will recognize that reading comprehension is a subcategory of language comprehension, and that language comprehension must entail attributes that often remain unmentioned in discussions of reading, especially the idea of the speech community. For communication to occur by means of language, the two sides (call them either speaker/listener or author/reader) have to learn and share the same language rules. For instance, a child learns that when a speaker says you to the child, it means the child, and when the speaker says I, it means the speaker. But when the child speaks, I means the child and you means the person being spoken to. The words take on different meanings — refer to different people – depending on the speaker, and this is a language rule that any comprehender must learn. A whole host of such tacit agreements are necessary to communication. The British philosopher H. P. Grice made a considerable reputation by explaining in a few pages the structure of many of these unspoken agreements.[3]The group of people who share these agreements is a speech community. Sharing the unsaid makes it possible for them to comprehend the said. It is the very thing that makes them a speech community.[4] Poor readers who can decode adequately but cannot comprehend well are usually readers who lack knowledge of a whole array of unspoken information being taken for granted by insiders in the speech community. To supply students with this unspoken, taken-for-granted knowledge as efficiently as possible should be the goal of a good reading program.