Garbage Can Model

The Garbage Can Model, developed by Cohen, March, and Olsen, describes organizations as arenas in which problems, solutions, participants, and decision opportunities exist relatively independently of one another and connect through temporal coincidence. Decisions do not arise through rational analysis but through the random coupling of these four streams. The model calls this condition organized anarchy.

Strategic Relevance

For leadership teams, the Garbage Can Model is a productive provocation. It describes a reality familiar to most organizations but rarely spoken aloud: solutions often exist before the matching problems are formulated. Who happens to be in the room influences the decision more than the question of who would be professionally responsible. And decisions are made not when the analysis is complete, but when a meeting takes place, a deadline looms, or a committee convenes.

This does not mean organizations act chaotically or irrationally. It means that the rational sequence of problem identification, alternative evaluation, and decision is an idealized model that only partially reflects actual processes. Whoever wants to improve strategic decisions must therefore not only increase analytical quality but design the conditions under which problems and solutions meet. The question is not just what is decided, but when, where, and with whom.

Common Misconceptions

The obvious misconception is to read the model as a description of dysfunctional organizations. In fact, it describes a basic condition that exists in every organization to varying degrees — including well-managed ones. Organized anarchy is not a defect but a property of complex social systems with ambiguous goals, unclear technologies, and fluctuating participation.

Equally misleading is the conclusion that decision quality cannot be influenced if decisions come about randomly anyway. The Garbage Can Model describes the mechanics, not their immutability. The streams can be shaped: through the deliberate composition of decision-making bodies, through time windows for specific topics, through the separation of problem and solution discussions. Decision premises work precisely here — they channel which streams can meet.

Decision Architecture Perspective

From the perspective of decision architecture, the Garbage Can Model makes the need for design particularly visible. If decisions arise through temporal coupling, then designing these coupling conditions becomes the central lever. Which topics appear on which agenda? Who participates in which decision rounds? Are there structures that prevent solutions from seeking their own problems?

Decision design in the model’s sense means: not maintaining the illusion of rational sequentiality, but designing the conditions under which the right problems meet the right solutions. This requires transparency about open decisions, clear decision rights, and formats that deliberately distinguish between exploration and decision. Decision gridlock in the Garbage Can Model arises not from insufficient analysis but from missing coupling opportunities.

Distinction

The Garbage Can Model is not a normative model — it does not prescribe how decisions should be made, but describes how they actually emerge in complex organizations. It differs from rational decision models that assume a logical sequence of steps, as well as from political models that describe decisions primarily as the result of power struggles. The randomness the model describes is not chaos but the result of complexity.