We should value diversity of opinion. It is the driver of innovation. When diversity of opinion is not valued, conflict takes the place of innovation. This is a valuable relationship that is critical to the success of any project, venture, or Lean Six Sigma project.
In the 1970’s, if you had a problem to solve, you could invite others to your office, write letters or make phone calls to bring minds together to help you. From a practical standpoint, you could bring maybe 5 or 10 of the best minds in your geographical area into one place, for a limited space in time, to synergize together.