As individuals, we tend to gravitate to people who share and confirm our beliefs. But, in business, surrounding yourself with ‘yes men’ could prove to be perilous. Recent studies have shown that working in cognitively diverse groups boosts creativity and problem-solving. This playfully animated short features audio from a lecture by the British author Matthew Syed at the RSA in London in 2019, and borrows from his research for the book Rebel Ideas: The Power of Diverse Thinking (2019) to argue in favour of cognitive diversity as a tool for innovation.