Now that there are user profiles (#408), each profile can have a tab for unproblematic ideas. Among all the ideas a user has submitted, those are the ones he can rationally hold. And another tab for problematic ideas, ie ideas he has submitted that he cannot rationally hold.
Now that there are user profiles (#408), the search page can have an option to filter ideas by user. That way, we can see that user’s uncontroversial ideas, meaning ideas of his that he can rationally hold, and controversial ones, meaning ideas of his that he cannot rationally hold.