Work in Argumentation Studies (AS) and Studies in Expertise andExperience (SEE) has been proceeding on converging trajectories, moving from resistance to expert authority to a cautious acceptance of its legitimacy. The two projects are therefore also converging on the need to account for how, in the course of complex and confused civic deliberations, nonexpert citizens can figure out which statements from purported experts deserve their trust. Both projects recognize that nonexperts cannot assess expertise directly; instead, the nonexpert must judge whether to trust the expert. But how is this social judgment accomplished? A normative pragmatic approach from AS can complement and extend the work from SEE on this question, showing that the expert's putting forward of his view and ''bonding'' it with his reputation for expertise works to force or ''blackmail'' his audience of citizens into heeding what he says. Appeals to authority thus produce the visibility and accountability we want for expert views in civic deliberations.My goal in this essay is to trace a convergence between scholarship in Argumentation Studies (AS) and in Studies in Expertise and Experience (SEE), and then to explore one way the two projects can complement and extend each other. I start by following the trajectories AS and SEE have taken from resistance to expert authority to a cautious acceptance of its legitimacy. Both AS and SEE thus find themselves confronting an important problem: to account for how, in the course