New research suggests that knowledge is a key factor in how we coordinate our beliefs with others, making it easier to agree on the truth. Unlike weaker forms of belief, knowledge is resistant to being swayed by opposing views, which makes it a crucial component in social interactions. This is because our brains have a system that checks our beliefs to ensure they are based on knowledge, and revises them if they're not. By recognizing the importance of knowledge in this process, researchers can better understand how we work together to arrive at a shared understanding of reality.