The draft lottery began as a fix for teams losing on purpose, and it was later changed again for the same reason. Flattening the odds addressed a flaw the original design created.
The original problem the lottery solved
Before a lottery, the worst record guaranteed the first pick. That made losing a rational strategy for a team without a realistic playoff route.
Introducing chance broke the guarantee. A bad team could no longer be certain of the reward, so the argument for losing weakened.
It did not disappear, though, because the worst record still carried the best odds by a wide margin.
Weighted odds recreated the incentive
Under a steeply weighted system, the difference between the worst record and the fourth-worst was large enough to matter over a season.
That gave teams a measurable reason to prefer defeat late in a year that was already lost, and roster decisions followed: veterans rested, minutes given to unproven players, trades that reduced short-term quality.
None of this required anyone to lose deliberately on the floor. The incentive worked entirely through personnel choices made months earlier.
Flattening removes the reward for finishing last
The revision gave the bottom few teams identical top odds. Being worst no longer improves the chance of the first pick relative to being nearly worst.
A team that strips its roster to reach the very bottom therefore gains nothing for the effort, which is the whole point of the change.
The lottery also draws more selections than before, so a poor record can now slide further down the order than it once could.
The remaining incentive is about the range
Teams still benefit from being in the lottery group rather than out of it, and the gap between a mid-table finish and a bottom-five finish remains meaningful.
What changed is the shape of the curve. The reward is now roughly flat across the worst teams and falls steadily above them.
That pushes the calculation towards being bad enough to qualify rather than as bad as possible.
Why the design keeps being revisited
Any system that hands the best young player to the weakest team creates some incentive to be weak. The question is only how sharp that incentive is.
Alternatives that decouple pick order from record entirely have been discussed for years, and each carries its own distortion.
The flattened lottery is a compromise: enough help for genuinely poor teams to rebuild, not enough to make collapse worth engineering.