a little knowledge is a dangerous thing

The phrase "a little knowledge is a dangerous thing" suggests that having limited or superficial understanding of a subject can be harmful or misleading. It implies that when someone possesses only a small amount of knowledge, they may overestimate their expertise and make misguided decisions or judgments. This phrase serves as a cautionary reminder that it is important to seek thorough knowledge and understanding in order to make well-informed choices and avoid the potential dangers of incomplete or inaccurate information.