This chapter explores dominant ideologies theoretically in Gil organizational selling. A framework is developed to advance our understanding 0/ how 'dominant ideological modes 0/ rationality' reflect predictability through the reproduction of accepted truths, hence social order in organization. Dominant ideological modes of rationality constitute professional identity, power relations, and rationality andframe prevailing mentalities and social practices in organization. It is suggested that members' categorization devices structure and constrain social practices. Supplementing the existent power literature, the chapter concludes that professional identity produces rationality. power and truth - truth being the overarching concept assembled ...