An examination of the information systems (IS) and social philosophy literature reveals that much has been written on the relevance of different research methodologies. Within the information systems research community several authors have called for the combining of interpretive and positivist research methodologies. This is an issue which is central to research design. This paper reviews three such calls by IS researchers and argues that cross-paradigmatic research is ill-founded. An alternative, inclusive understanding of the relationships between different forms of IS research will be offered. This alternative view is based on an acceptance of different research methodologies as philosophical equals.