It’s not possible to get every call right, so instant replay is a necessary supplement to umpires’ skill  Umpires must make split-second judgments, often from bad angles and with many elements to watch simultaneously. Mistakes will happen. Even the official rules acknowledge this when it tells umpires, “You no doubt are going to make mistakes” (Official Baseball Rules, Rule 9.05). [1] Some calls will have to be made from a significant distance away from where the umpire is located—a commonly cited justification of MLB’s adoption of instant replay on boundary calls. [2] Fans hold umpires to an exceptionally high standard; as former umpire Nestor Chylak put it, “They expect an umpire to be perfect on Opening Day and to improve as the season goes on.” [3] But it is impossible for a human to attain perfection on his own, so we should provide him with the tools that will enable him to meet the exacting standards set out for him.  It is folly to withhold technology that is already available. Even MLB Commissioner Bud Selig, generally an opponent of instant replay, acknowledged “that the extraordinary technology that we now have merits the use of instant replay on a very limited basis” when he announced its adoption on boundary calls. [4] Just as we would never countenance a rule prohibiting umpires from wearing eyeglasses to see calls better, we should also not tolerate a rule that essentially keeps umpires blind to a reality that everyone else—reporters, coaches, and fans—has access to. Well-respected Sports Illustrate columnist Joe Posnanski captured this point well: “Baseball ... should institute replay because it’s just not sustainable in today’s technological world to make bad calls on the field. Those days are over.... You can’t keep giving the fans at home better access to the truth than the home plate umpire.” [5] Instant replay is a necessary tool to help umpires “see” better.  [1] Ibid .  [2] Ed Price, “Baseball Brunch: Upon Further Review…,” AOL News, May 31, 2009,  .  [3] “Umpire Quotes,” Baseball Almanac,  .  [4] Jack Curry, “Baseball to Use Replay Reviews on Homers,” New York Times, Aug. 26, 2008,  .  [5] Joe Posnanski, “Meals and Squeals,” SI.com, July 27, 2011,  .