Weak ties often have different knowledge from those in our immediate social circle, said Stav Atir, an assistant professor of management at the Wisconsin School of Business at the University of Wisconsin-Madison. Dr. Atir led a study in 2022 that suggested that people underestimate the potential for learning from these interactions. “In our data, we often see strangers giving each other recommendations such as a new restaurant to check out, a new band to listen to and even a potential place of employment,” she said.