Although this study contributes to the topic as discussed, it is evident that the findings and results should be considered in view of the limitations of the study. This includes taking into account that only two case study projects were used, and both of which originated from the same South Australian organisation. Additionally, the method for defining the critical scores of RS and RPN might be an oversimplification of the fact as a result of the lack of consensus with regard to determining the critical scores. As such, future studies should address this issue in their investigations. In addition, the results might be affected by the organisational context of the company. On the other hand, these limitations create opportunities for further research in this area. This includes the benefit of including a larger number of R&D projects as case studies, preferably from different organisations and in different industries. This strategy will provide a fertile ground on which to validate the results in various contexts.