Which is true. The word "reference" is overloaded, it can be used to mean "anything pointery that's guaranteed to exist" too. Box<T> in this context is a refer

Which is true. The word "reference" is overloaded, it can be used to mean "anything pointery that's guaranteed to exist" too. Box<T> in this context is a reference. The post does kind of dance between definitions of "reference" a bit, but I think that's intentional.