Most people instinctively avoid conflict, but as Margaret Heffernan shows us, good disagreement is central to progress. She illustrates (sometimes counterintuitively) how the best partners aren’t those who just follow like sheep and are happy to agree regardless. Also how great research teams, relationships and businesses allow people to deeply disagree. While a lot of people would agree with this it isnt always put in to practice which can and is detrimental. Part of the problem was that it takes time to transform perception, even if data shows that something is incorrect it isnt always that simple. We not only need to Dare to disagree, but also dare to believe in an alternative view or belief based on data and new information. We must ourselves be open to changing our own views or consider other possibilities.