But perhaps a detective or philosopher/scientist/engineer might seek to learn about something, at progressively deeper levels of detail, to solve a crime or a puzzle.
而或許一個偵探或一位哲學家/科學家/工程師可以以此來學習某些事實，以對細節漸進加深的方式，來解決一場犯罪或一件拼圖。