We could have learned this almost 2 1/2 years ago, a warm August night in the LA Coliseum when a young Dak Prescott completed 10 of 12 passes for 139 yards and two touchdowns in his opening warm-up act as an NFL quarterback.
If that was expecting too much of our foresight, then maybe the Cowboys' team-record 11-game win streak that season, the one that earned him Rookie of the Year honors and sent Tony Romo into retirement, should have told the tale.
But if none of that worked and we reserved our doubts about a fourth-round pick all the way into this year's playoffs, consider what took place over the weekend.