As scientists have pointed out, the Allen Curve follows evolutionary logic. For the vast majority of human history, sustained proximity has been an indicator of belonging—after all, we don’t get consistently close to someone unless it’s mutually safe. Studies show that digital communications also obey the Allen Curve; we’re far more likely to text, email, and interact virtually with people who are physically close. (One study found that workers who shared a location emailed one another four times as often as workers who did not, and as a result they completed their projects 32 percent faster.)
Daniel Coyle in The Culture Code