The accessibility condition addresses the gap between formal and substantive openness in participatory processes. A process may be legally open to everyone while being practically accessible only to those with the time, resources, and expertise to navigate it. Fung's condition demands that institutional design actively lower the barriers that exclude affected populations, rather than merely declining to raise them. The condition is violated by processes conducted in technical language during business hours through channels requiring specialized knowledge, even when those processes are formally described as public. It is satisfied by processes designed around the actual constraints that target populations face, as in Porto Alegre's neighborhood-based, after-hours assemblies.
Accessibility is the condition most often confused with mere formal openness. The public comment period on a U.S. federal regulation is legally accessible to any citizen, but substantively accessible only to those familiar with the Administrative Procedure Act, comfortable with regulatory language, and able to invest the hours required for meaningful engagement. The result is that comment periods systematically overrepresent professional advocacy organizations and industry stakeholders while underrepresenting the silent middle whose considered judgments the process is supposedly designed to access.
The condition has specific implications for AI governance. Technical complexity creates an accessibility barrier that must be addressed through information-provision systems that translate rather than simplify. The distinction matters: simplification distorts, while translation connects technical content to its implications for participants' lives without losing substantive accuracy. Deliberative polling methodologies have demonstrated that non-specialists, given adequately translated information and structured time for engagement, can reason meaningfully about complex technical questions.
Accessibility interacts with the other two conditions in ways that prevent their independent satisfaction. A process that is accessible but not deliberative becomes mere aggregation of uninformed preferences. A process that is accessible but not consequential becomes a forum for venting without effect. The three conditions must be designed jointly because each shapes the quality of the others.
Random selection — sortition — is Fung's preferred mechanism for ensuring accessibility at scale, because it eliminates the self-selection bias that excludes populations lacking prior political engagement. The Irish citizens' assemblies and the French climate convention demonstrated that sortition produces participant pools more representative of the general population than any self-selected process, while also neutralizing the capture dynamics through which organized interests dominate open participation mechanisms.
The accessibility concept emerged from Fung's analysis of why participatory institutions that appeared democratic on paper produced systematically unrepresentative outcomes in practice. The observation that formal openness did not produce substantive inclusion drove the search for design principles that could produce the representativeness that theoretical models assumed.
The influence of Iris Marion Young's work on structural inequality shaped Fung's thinking about how apparently neutral institutional designs systematically exclude populations by failing to address the specific constraints they face. Accessibility as Fung specifies it is a response to this critique: institutional design that does not actively address exclusion will reproduce it.
Formal openness is not substantive accessibility. Processes legally open to everyone may be practically navigable only by those with specific resources, and institutional design must address the gap actively.
Sortition outperforms self-selection. Random selection produces more representative participant pools than any process requiring volunteers, because the volunteer bias systematically excludes populations whose engagement would require the most institutional support.
Translation, not simplification. Technical complexity is addressed by connecting content to lived consequence, not by dumbing it down — a distinction that preserves substantive accuracy while enabling meaningful participation.
Accessibility conditions the quality of the other conditions. Who participates shapes what deliberation produces and whose interests the consequential outcomes serve.