even a fool may sometimes give good counsel
A set phrase meaning that even an ordinary person's many thoughts can occasionally yield a good idea. Used to express humility about one's own suggestion or to encourage listening to others.
My opinion may be just a lucky thought from an ordinary person, but please consider it.
As the saying goes, even a fool may sometimes give good counsel, so we should listen to everyone's opinion.
A similar proverb meaning 'even a fool has one good idea.' 百慮一得 emphasizes the process of many thoughts leading to one good result, while 愚者一得 focuses on the fool's occasional insight.
From the Chinese maxim 愚者千慮、必有一得: even a foolish person, after many considerations, may arrive at one worthwhile insight. 百慮一得 substitutes 百 “a hundred” for 千 “a thousand.”