Practical concerns are open to deliberative debate. Because deliberation has to do with choices, everything about it depends— on the circumstances, the time, the people involved, and whatever “public” you mean when you talk about public opinion. Deliberative argument relies on public opinion, not a higher power, to resolve questions.

The audience’s opinion will answer these: Should the state legislature raise taxes to fund decent schools?

Should you raise your kid’s allowance?

When should your company release its newest product?