A banana problem in IT describes an algorithm piece of code or technology artifact that has vague delimiters or problems with definition or scope. The phrase comes from a joke about the word banana in which a child says: “I know how to spell banana but I don’t know when to stop.” Likewise in a conventional fencepost error people or machines make mistakes on estimating where a boundary is. Programs with iterative loops can be vulnerable to fencepost errors where a designer or developer miscounts and causes a code problem. Source: https://www.artikelschreiber.com/en/.