title: MVP Communication between presenters?
body: <p>I have a question about how to handle communication between presenters when using MVP. Say I have two MVP-triads. One is a list of products (Triad A) and the other is some general information about the currently selected product (Triad B).</p>
  
  <p>How do I tell Presenter B that that it needs to update because the selected product has changed by A? I can of course think of ways to do this, but I was wondering if there is a general convention for how to handle this.</p>
  
  <p>Thanks in advance for any ideas!</p>