" Allen could find none that played a meaningful role in cohesion. Except for one. The distance between their desks. At first he didn’t believe it. Group chemistry is such a complex and mysterious process that he wanted the reason for it to be similarly complex and mysterious. But the more he explored the data, the clearer the answer became. What mattered most in creating a successful team had less to do with intelligence and experience and more to do with where the desks happened to be located. “Something as simple as visual contact is very, very important, more important than you might think,” Allen says. “If you can see the other person or even the area where they work, you’re reminded of them, and that brings a whole bunch of effects. "

― Daniel Coyle , The Culture Code: The Secrets of Highly Successful Groups