Governance & Policy
Unintended Consequences
Effects of an intervention beyond those intended — policy design's standing hazard, from biofuel land rush to cobra bounties.
Definition
Unintended consequences are the outcomes of purposeful action that were not intended or foreseen — beneficial, neutral or perverse. The concept, systematised by sociologist Robert Merton (1936), arises from bounded knowledge, values shaping attention, immediacy of interest, and self-defeating predictions. Sustainability policy is rich in cases: first-generation biofuel mandates driving deforestation, diesel promotion raising urban air pollution, plastic bag bans multiplying bin liner sales, and the archetypal "cobra effect" of bounties breeding the pest.
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