Instant replay will take too long  We already see it with boundary calls: The umpires need to go to the review station, then they need to watch the footage of the play several times, then they need to weigh whether the footage is convincing enough to meet the requisite burden of proof, and then they need to return to the field and signal their decision. In the meantime, tens of thousands of fans are sitting in the stands waiting, millions of people are watching at home, the pitcher is becoming less limber, and any momentum to the game is completely lost. It’s often noted that baseball is a slow sport. “Baseball has no clock,” the saying goes. [1] Instant replay will slow down an already-slow game.  [1] William Deresiewicz, “Metaphors We Play By,” American Scholar, June 6, 2011,  .