Bottom-up design makes programs easier to read. An instance of this type of abstraction asks the reader to understand a general-purpose operator; an instance of functional abstraction asks the reader to understand a specialpurpose subroutine.

여기서 instance가 먼 의미로 쓰인건가여
사전 찾아보니 실례, 예시 이런 뜻이던데
프로그래밍에서 쓰는 instance랑 좀 다르드라구여