How do you make a conversation interesting? You don't need to agree all the time, nor jump from one topic to another to avoid boredom. A Dartmouth College study, published on 6 November 2026 in the journal Science Advances, suggests that the most enjoyable conversations follow a precise rhythm: you come together on a topic, drift apart to bring in a new idea, then find each other again.
The authors, Kathryn O'Nell, Kiara Sanchez and Emily Finn of the Department of Psychological and Brain Sciences, give this pattern a name borrowed from physics: pink noise. It sits halfway between two extremes we all know, the chaotic chat where nobody listens to the other, and the repetitive one that keeps circling the same point.
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