This document discusses different styles of team members: contributors, collaborators, communicators, and challengers. It notes the strengths and potential weaknesses of each style. It emphasizes that successful teams need all four styles. Additionally, it explains that individuals may have traits of multiple styles and can adapt their approach. The key is for team members to optimize their strengths, minimize less productive traits, and borrow behaviors from others when beneficial to the team. Overall, the document stresses that diversity among team members' styles is what makes great teams.