The only thing worse than an uninformed public in a democracy is no democracy at all. Yes, the public can and should be involved. Most people will consent to a decision, even one they might not agree with, if they believe it was reached fairly and intelligently. Thus, any public consultation process must first provide for substantive and procedural fairness. Second, to understand and resolve any problem, the facts and interests of all stakeholders must be freely aired and debated.
Theory suggests a large group but practicality dictates a smaller one.
In any event, all major interests groups must be represented, including the public. These reps must respect the legitimate interests of others and the public interest, which Walter Lippman once defined as what people would choose if they saw clearly, thought rationally, acted disinterestedly and benevolently. The Internet is a powerful way of consulting the public, supplementing traditional methods, each having pros and cons. One thing to avoid is superficiality. Citizen juries need at least several days to discuss and deliberate complex issues.