William Wrigley Jr., the American chewing gum tycoon, once noted that business is built by men who disagree, and that “When two men always agree, one of them is unnecessary.” Indeed, not just in business but also in politics, sports, and the arts, there is no shortage of real-world examples of successful partnerships that were fueled as much by the alignment of ideas as by creative tension or discord.

Source: Too Much Team Harmony Can Kill Creativity