Monads and functors are nothing new either, but that doesn’t mean giving them that name was a bad idea. Moreover, the term “unary” is used to distinguish from

Monads and functors are nothing new either, but that doesn’t mean giving them that name was a bad idea. Moreover, the term “unary” is used to distinguish from other, non-unary options: https://grpc.io/docs/what-is-grpc/core-concepts/ https://grpc.io/docs/what-is-grpc/core-concepts/