Research tells us that cognitive diversity makes a group smarter. Two heads are, indeed, better than one, and many heads are even better, especially when everyone is willing to share their expertise and opinions. While diverse thinking and disagreements can be uncomfortable, they are more likely to lead partners or a team to make progress, innovate and come up with breakthrough solutions than consensus and “nice” conversations in which people hold back what they think. But how do you have a productive debate? By reminding your group to follow four general rules: Remember we’re all on the same team. Keep it about facts, logic, and the topic at hand.  Don’t make it personal. Be intellectually humble.

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