CONCEPT
Mental Models
Deeply ingrained assumptions shaping perception and action—Senge's second discipline, the fishbowl water that must be surfaced before organizations can navigate change.
Mental models are the deeply ingrained assumptions, generalizations, images, and beliefs that influence how individuals and organizations understand the world and take action. In Senge's framework, they are not theories held at arm's length for critical evaluation but the invisible water inside the fishbowl—so pervasive, so woven into the structure of perception, that they operate beneath conscious awareness as 'simply how things are.' The discipline of working with mental models involves surfacing these assumptions, examining them honestly, and revising them when reality no longer supports them. Drawing on Chris Argyris's distinction between espoused theories and theories-in-use, Senge demonstrates that the gap between what people say they believe and the assumptions that actually drive their behavior is often enormous—and that organizations optimizing based on obsolete mental models will fail regardless of their execution capability. The AI transition has cracked every mental model about the value of technical skill, the structure of teams, and the meaning of expertise, exposing organizations whose structures embody assumptions that no longer match reality.
