An enthusiastic project team has been created to implement the design for a piece of equipment with a specific function as part of machinery being manufactured for a client. One team member has specific and vital technical expertise but is always quiet during meetings. A decision on a design element within his area of expertise has been made and he has, apparently, acquiesced to this decision, but looks very uncomfortable. As an inclusive team member, evaluate what you should do in such a situation, with appropriate reasoning.