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monkey see, monkey do

phr. A conventional explanation for mimicry, especially of a foolish action done with no consideration of the consequences.

Wikipedia
Monkey see, monkey do

Monkey see, monkey do is a pidgin-style saying that appeared in American culture in the early 1920s. The saying refers to the learning of a process without an understanding of why it works. Another definition implies the act of mimicry, usually with limited knowledge and/or concern for the consequences.

The saying could originate from a story in the folklore of Mali, West Africa, made well known by Esphyr Slobodkina's retelling, which she calls Caps for Sale (A Tale of a Peddler, Some Monkeys and Their Monkey Business). This folk-tale is retold by Baba Wagué Diakité in his 1999 book The Hatseller and the Monkeys, set in Mali. Diakité notes that versions of this tale also exist in Egypt, Sudan, India, and England.

Jazz singer-songwriter Michael Franks used the saying as the subject and title of his song "Monkey See – Monkey Do" on his 1976 album " The Art of Tea". A television show of the same name aired on PBS Kids Sprout. The phrase is also mentioned in Nirvana's song "Stay Away" from their album Nevermind.

This same saying was used by Terence Trent D'Arby in the song "Wishing Well" from his 1987 album "Introducing the Hardline According to Terence Trent D'Arby" and by Beth Orton in her Song "Galaxy of Emptiness" .

The phrase is also pastiched in the 1968 movie Planet of the Apes, inverted into "Human see, human do".