> Even if their encoding has identify, immutable value don’t need it. Values indeed don't have physical identities. The problem is that, when you use a languag

> Even if their encoding has identify, immutable value don’t need it. Values indeed don't have physical identities. The problem is that, when you use a language with pervasive object identities, the values you want only exist in your head, not in the semantics of the language you are using. > Languages like C# allow you to throw off identity altogether with pass/store by value structs. Please teach me how to define list or tree values in C#, sensei.