Presenting uncertain results where being wrong matters

There is a difference between domains where a 90% accuracy produces a fantastic result in a day, and domains where the last 10% is a problem./nIt is important to communicate the importance of accuracy in domains where it is important, and to filter results that are not accurate./nIt is also important to have a detailed ironically manual hierarchy of different kinds of searches, in order to apply different types of search engines in different ways.