Oakland County's Materials Management Plan public-engagement program is designed to involve residents, municipalities, businesses, facility operators, haulers, nonprofits, industry experts, adjacent counties, and other stakeholders. The approved work program calls for an online survey, resident focus groups, open houses, stakeholder meetings, and a SOAR analysis. These groups contribute different kinds of information: residents experience services, municipalities administer them, and industry participants understand operating constraints and markets. A meaningful engagement process therefore needs a way to use disagreement rather than simply averaging unlike forms of input. A resident survey, a city manager, and a recycling operator are answering different questions. Good engagement should not pretend those voices are interchangeable; it should be explicit about what each is informing.