It hit me like a hammer. Ken Wilson should have gone down at the plate, but he got up to bat with his eyes closed. It was only when he was taking bows that he saw the Scoreboard and the signals put him down. And Thumper had been out there changing a burned-out bulb, which wasn't burned out at all, but set up to flash instructions in the ultraviolet light range. Even if folks in the stands or other players noticed it, if it wasn't flashing a code that did something to their stat-soft, they'd be unaffected and would have no reason to remember it.