An understanding of the nature of theology of education, as of any other field of applied or practical theology, will spring from some previous understanding of the nature and functions of theology itself. But here the theorist in the interdisciplinary field is in something of a dilemma. If he fails to make it clear that theology of education rests upon an interpretation of the nature of theology, his treatment will tend to be superficial. He will be exploring the theological implications of education, but he will not have shown himself aware of the implications for theology of the methods he uses in his exploration. Since his aim is to elucidate implications for theology, he must turn his scrutiny inwards towards himself as theologian, as well as outwards towards education. On the other hand, in setting forth the understanding of theology which informs his work in applied theology, he makes his work more controversial, since there will be other understandings of theology, and other understandings of applied theology will flow from these to relativise his own methodology. Or it may be thought that the interdisciplinary field necessarily rests upon this and only this understanding of theology, and then those whose understanding of theology differs will conclude that the whole interdisciplinary enterprise is misconceived. A relatively under-developed interdisciplinary field such as theology of education is particularly susceptible to this misunderstanding.