Bradman's golf ball and water tank
As a boy in rural Bowral, Don Bradman practised alone by hitting a golf ball with a cricket stump against the curved brick base of a water tank, reacting to unpredictable rebounds. This self-invented game, not formal coaching, built the unorthodox technique and hand-eye speed behind his Test average of 99.94. Smith uses the case as evidence that the greatest talent can emerge from idiosyncratic, playful practice that no coaching system would have designed.