title: Is it bad practice to send an actor a message from something which is not an actor?
body: <p>Suppose I have some class which has a property <code>actor_</code> of type <code>Actor</code>. Is there a problem with me doing</p>
  
  <pre><code>def someMethod() = {
    actor_ ! "HELLO"
  }
  </code></pre>
  
  <p>Or should sending a message always be done from another actor; e.g.</p>
  
  <pre><code>def someMethod() = {
    Actor.actor { actor_ ! "HELLO" }
  }
  </code></pre>