" This closing chapter takes up three problems about authoritative reason giving that earlier chapters have raised but not resolved: what makes reasons credible, how people who work with specialized sorts of reason giving can make their reasons accessible to people outside their specialties, and what particular problems social scientists face when it comes to communicating their reasons, and reconciling them with the reasons that we as ordinary people give for our actions. Governmental commissions, we will see, offer just one of many ways to broadcast reasons. We will also see that the credibility of reasons always depends on the relation between speaker and audience, in part because giving of reasons always says something about the relation itself. "

― Charles Tilly , Why?