The best principle illustrated is 'People respond to incentives'. It shows how individuals react to policy changes and adjust their behavior accordingly.
People respond to incentives is the principle best illustrated in this scenario. When New York bans smoking in restaurants, residents of Manhattan who dislike second-hand smoke drive to New Jersey for meals to avoid the restriction, showing how people adjust their behavior based on incentives.
This situation exemplifies how individuals seek to maximize their benefits and minimize costs by changing their actions in response to policy changes.
Moreover, it showcases how government interventions in markets can lead to unintended consequences as individuals adapt their behavior to suit their preferences and circumstances.
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