To solve a problem or to reach a goal, you don't need to know all the answers in advance. But you must have a clear idea of the problem or the goal you want to reach.
Bio: Rabbi Hermann Adler was the Chief Rabbi of the British Empire from 1891 to 1911. The son of Nathan Marcus Adler, the 1911 Encyclopædia Britannica writes that he "raised the position to one of much dignity and importance."