You are the leader of a team of product designers working on building a better mousetrap. Your team is composed of 2 marketing people, 1 engineer, and 2 production people. The engineer is shy and quiet, but she has the most expertise on mousetrap design essentials. You just wish she would speak up more. One of the marketers is keen on getting everyone to believe he knows what he's doing (he's new to the company), so he dominates conversations. But he only talks about marketing. When one of the production people asks him how his ideas might play out on the factory floor, he changes the subject back to marketing. The other production person has confided in you that she hates working with this group. She's angry from when she felt the dominant marketing guy insulted her and she is not interested in forgiving him. As the leader of the team, what do you see as the root cause of this team's problems and what would you recommend to turn things around?