 A more important complication is the case where there is no realiser of the theory. Here it is important to distinguish two cases. First, there is the case where the theory is very nearly realised. That is, a theory that contains enough of the essential features of the original theory turns out to be true. In that case we still want to say that the theory manages to provide denotations for its new terms. Second, there are cases where the theory is a long way from the truth. The scientific theory of phlogiston, and the folk theory of witchcraft, are examples of this. In this case we want to say that the terms of the theory do not denote.