One of the most prominent narratives of the 2018-19 NBA season is about the dominance of Moreyball across the league – an overriding aversion to low-efficiency mid-range shots, in favor of Morey-approved looks at the rim and from three. What does this shift look like? Is the typical three-pointer really that much more efficient than the typical 18-footer? How radically has league-wide shot selection really changed? And can this change be traced to Morey’s Rockets?