Learning results from a two-way, mutually changing transaction between the learner and the environment, not from a fixed environment acting on a passive person: personal characteristics, environment and behaviour determine each other. Kolb draws on Dewey's situation, Lewin's view that behaviour depends on both person and environment, and laboratory training, in which learners themselves set up situations that serve their learning objectives. The practice implied is to connect learning with the real-world environment rather than shutting it out, and to let learners shape the conditions in which they learn.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.