Systematic empirical research versus clinical case studies: a valid antagonism?

This paper considers the issue of systematic empirical research versus clinical case studies raised by Hoffman (2009). A rebuttal of Hoffman's arguments is offered, followed by an argument that each method addresses itself to different questions and that posing them in opposition is not fruitful. Finally, criteria and requirements of the case study method are proposed that, if met, would enhance its evidential value.