 Opinion on these questions is deeply divided. Some people suppose that The Turing Test does not provide a useful goal for research in AI because it is far too difficult to produce a system that can pass the test. Other people suppose that The Turing Test does not provide a useful goal for research in AI because it sets a very narrow target (and thus sets unnecessary restrictions on the kind of research that gets done). Some people think that The Turing Test provides an entirely appropriate goal for research in AI; while other people think that there is a sense in which The Turing Test is not really demanding enough, and who suppose that The Turing Test needs to be extended in various ways in order to provide an appropriate goal for AI. We shall consider some representatives of each of these positions in turn.