Published in July 1990 in Technology Review, "Managerial Microworlds" introduces and names the concept of computer-based management simulations as a vehicle for accelerated organizational learning. Co-authored with Colleen Lannon, the article appears in the same year as fifth-discipline-1990 and serves as its technical companion piece, explaining the simulation infrastructure that Senge and colleagues at the mit-system-dynamics-group had been developing throughout the 1980s.
The core argument is that managers face a fundamental learning disability: the real systems they manage are too complex, too slow, and too costly to experiment with directly. The consequences of decisions play out over years or decades; feedback is delayed, distorted, and entangled with other causal factors. microworlds — simplified but dynamically faithful computer simulations — compress time and allow managers to run experiments, observe consequences, and revise their mental models in ways that real-world experience cannot support. The beer-game is the most well-known example: a supply-chain simulation that reliably produces the bullwhip effect and reveals the systemic roots of behavior that managers typically attribute to individual failure.
The article situates microworlds within systems-thinking-fifth-discipline and the broader learning-organization project: they are not training tools for delivering correct answers but learning environments for surfacing and testing mental-models. This epistemological framing — simulations as mirrors for examining assumptions rather than games to win — distinguishes Senge's approach from conventional business gaming. The work drew on jay-forrester's system dynamics tradition and anticipated the serious games movement by more than a decade.