@mattiemMatt Massicotte if you find yourself with too much time, I'd enjoy a continuation of your list of "must"s for actors from "When should you use an actor?", because apart from the list, it's hard to find reasons (to follow or argue with):

> Deciding to use an actor is less simple. In fact, I think there are four conditions that must be satisfied to truly require an actor. First, you have some non-Sendable state. ...

E.g. :two: why is multiple place referencing a concern at all?