38 The unsolved case of children is discussed in detail for a reason. There is no merit in an analytical procedure which ‘eliminates’ all but one of a set of alternative analyses simply by fiat—by saying that when such-and-such types of alternatives present themselves we shall accept the one which has certain characteristics and reject the others. Our aim is to achieve the most accurate and clearest picture possible of the workings of a language, on all levels—phonemic, morphemic, and tactical; in some cases this is attained not by giving a single treatment, but precisely by indicating the alternatives. For in some cases a range of choice is determined not by our approach, but by the nature of the language; and when this is so, the existence of a range of choice in a particular portion of the language is one of the facts about the language that ought to be portrayed in our description. In one sense, any method of description which conforms to the principle of total accountability is correct; if we nevertheless discuss the relative merits of one procedure or another within this fundamental framework, the purpose is to attain greater mutual intelligibility among the writers of grammars and, in terms thereof, more accurate pictures of the languages we describe.