This is not a normal thing for coaches and players to do; most coaches and players interact in short, highly calculated bursts. But Popovich wanted to connect, to dig in and see if Duncan was the kind of person who was tough, unselfish, and humble enough to build a team around. Duncan and Popovich evolved into what amounts to a father-son relationship, a high-trust, no-bullshit connection that provides a vivid model for other players, especially when it comes to absorbing Popovich’s high-volume truth-telling.