One prevailing theory about how long the writers strike will last is that the WGA will have a framework for their own contract should the studios reach a deal with the Directors Guild or the Screen Actors Guild, leaving the writers on an island. It’s more or less what happened back in 2007-08. But according to a new message from WGA leadership, that won’t happen this time. In a message to members on Thursday titled “The AMPTP Playbook Won’t Work,” the WGA negotiating committee said that it would not allow the studios to create division among the unions.