You're taking a complicated subject and reducing it to talking about what amounts to be pretty superficial syntax. There's more to messaging than just how the s

You're taking a complicated subject and reducing it to talking about what amounts to be pretty superficial syntax. There's more to messaging than just how the syntax of sending a message - how do you represent messages? Call by value or reference? Is the call synchronous or asynchronous (e.g. Erlang)? Also, in terms of syntax, why not: send(receiver, sender, message) Why is the act of sending tied to the subjects at all, and not the responsibility of the system itself?