Comparing shot charts from two decades apart shows a change so complete it looks like a different sport, and it followed from simple arithmetic.
The calculation
Points per attempt, not shooting percentage.
Which favours three-point attempts even at substantially lower conversion rates, since each one is worth fifty percent more.
A shot converted at thirty-five percent from three yields more than one converted at fifty percent from two.
The mid-range decline
Long two-point attempts are the least efficient shot available — nearly as difficult as a three and worth less.
Which made them the obvious thing to eliminate.
Attempt frequency from that area has fallen dramatically across the sport.
Shots at the rim
The most efficient shot, and the hardest to obtain against a set defence.
Which is why so much offensive design is about creating them.
Free throws generated in the process add substantially to the value.
The defensive counter
Defences now prioritise protecting the rim and contesting the arc, conceding the mid-range deliberately.
Which is a coherent response and creates the shots that skilled players still take late in games.
Where the mid-range survives
Late clock situations, against switched defences, and in playoff basketball where defences are tighter.
Which is why postseason shot distributions differ from regular season ones.
The shot is not bad — it is the least good option, which is a different claim.
Player development consequences
Big players now develop perimeter shooting because the alternative limits their playing time.
Which has changed what young players train and what positions mean.
The criticism
That the sport has become stylistically uniform and that variety has been lost.
Which is a legitimate aesthetic objection rather than a tactical one.
Rule changes to rebalance incentives have been discussed periodically and not implemented.
Reading a shot chart
Look at attempt distribution before percentages.
Where a team shoots from tells you more about how it plays than how often it makes them.
Free throw generation
Drawing fouls produces the most efficient scoring opportunity available.
Which is why rule interpretations around foul-drawing moves have been adjusted periodically.
Players skilled at generating contact carry value that shot charts alone do not show.
Offensive rebounding trade
Crashing the boards produces second chances and concedes transition opportunities.
Which most teams have resolved in favour of getting back defensively.
Some teams have deliberately reversed this and found success, which suggests the question is not settled.
Pace
More possessions produce more scoring for both teams.
Which is why raw scoring totals are misleading across eras without adjusting for pace.
Per-possession measures are the comparable ones.
College and international influence
Shorter shot clocks and different arc distances produce different optimal distributions.
Which is why players adapt when moving between competitions.
Reading a shot chart
Volume by zone first, then efficiency, then compare against league averages for the same zone.
Three-point defence
Defences now prioritise running shooters off the line.
Which has increased the value of players who can attack a closeout.
Shooting is no longer sufficient on its own at the highest level for this reason.
Volume and variance
Heavy three-point reliance increases outcome variance.
Which means results swing more between games than in previous eras.
In a single playoff series, that variance is a genuine risk that teams have discussed openly.
Playmaking
Creating efficient shots for others has become the most valued offensive skill.
Which is why passing metrics receive more attention than they once did.
The pass that leads to the pass that creates a shot is now tracked and valued.
Coaching adaptation
Coaches who resisted the shift have largely been replaced or have adapted.
Which happened over roughly a decade.
Historical comparison
Comparing players across eras requires adjusting for pace, rules and shot distribution, and rarely does.
What has not changed
Getting to the rim and drawing fouls remain the most efficient scoring available.
Which is why the players who do both are still the most valuable offensive pieces.
The three-point emphasis is a response to defensive geometry rather than a preference for the shot itself.
Closing
Where a team shoots from is a decision, and shot charts are the clearest record of what a coaching staff believes.
The next question
Whether shot creation against elite defences can be modelled as usefully as shot value has been.
Which is where current work is concentrated.
Efficiency is understood; generating opportunities against a prepared defence is not, to nearly the same degree.
Officiating interaction
How fouls on three-point attempts are called affects the value of the shot considerably.
Which has prompted rule adjustments where specific moves were being used to draw fouls.
Officiating interpretation is a genuine input to what shots are worth taking.
A closing thought
The revolution was arithmetic rather than insight, which is why it was so difficult to argue against once teams started acting on it.