“When everyone in a group always agrees, it may mean they don’t have many ideas. Or it may mean that avoiding conflict is more important to them than generating and evaluating new ideas. It may even mean that people who express new ideas are ridiculed, ostracized, and driven out of the group. Regardless of the reasons, lack of conflict and dissent means the group is unlikely to express and develop many valuable new ideas. Groups—and societies—that stifle people with new, untested, ideas undermine both imagination and personal freedom.”