Citizens are those directly affected by policy, so when so-called experts make policies that have unintended consequences, the citizens are those that are most affected by those policies. So citizens can offer informed historical context when it comes or making policy and offer unique insights that should be taken into account by policy makers.
Citizens are capable of making effective policy that is in the best interest of the majority. The primary challenge for citizens in making policy, however, is in their ability to be diplomatic. Too often, citizens allow personal opinion to interfere with logic and reason. Once citizens are able to put emotion aside and make rational decisions, they are good at making policy.