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Yo-yo problem

In computer science, the yo-yo problem is that programmers need to scan the inheritance graph[?] to understand the control flow of a program. It often happens in object-oriented programming. The term is derivered from up-down movement of a toy yo-yo.

Most practices of object-oriented programming recommend keeping the inheritance graph as shallow as possible to avoid this problem. Some additionally advise the use of composition[?] instead of inheritance.

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