The functional account of emotion stands as one of the most generative frameworks in contemporary psychological and depth-psychological inquiry, positing that emotions are not mere epiphenomena of inner life but adaptive instruments oriented toward specific biological, social, and motivational ends. Within the Seba corpus, this position is articulated most systematically by Lench and colleagues, whose 2018 edited volume constructs a thoroughgoing functionalist architecture: discrete emotions serve as precision tools, each calibrated to particular environmental challenges, and each capable of being either adaptive or maladaptive depending on context and regulation. Roseman’s ‘emotion system’ theory and Tolman’s early observation that emotions ‘act back’ on events provide genealogical anchoring for the view that emotional response syndromes are evolutionary strategies rather than reactive noise. The framework is not without internal tension: the proliferation of proposed functions for any single emotion — sadness, for instance, is assigned interpersonal, intrapersonal, cognitive, and goal-disengagement roles simultaneously — risks explanatory diffusion. Barrett’s constructionist position, while not opposed to functionalism per se, challenges the discrete-emotion premise that underpins most functional theorizing. Schore’s neurobiological account adds developmental depth, showing how functional emotional capacities are built through early attachment experience and corticolimbic maturation. Across these voices, the functional account remains indispensable to empirical emotion science, structuring hypothesis generation and linking affective states to adaptive outcomes.