Human beings are inherently overconfident and reluctant to challenge high-status individuals. This was evident in a failed decision made by Netflix CEO Reed Hastings in 2011. To address these common human tendencies in business, applying a scientific approach with two ground rules - arguing as equals and relying on evidence - is crucial. By establishing a norm of science within the company, Hastings transformed Netflix into a place where egalitarian, evidence-based debates thrive.