verb | noun
 verb. a change in mental model;
 noun. one of four universal functions of organization; the L in VMCL;
See paper: Cabrera, D. and Cabrera, L. (2019). Defining Learning: A Change in Mental Model. Journal of Applied Systems Thinking. (19). 5.
Learning occurs [ideally] as as a result of the ST Loop, a process that leads to changes in mental models that better approximate Reality; L is focused entirely on the Capacity (C) function but receives feedback from Capacity (C), Mission (M), and Vision (V); Capacity is sometimes referred to as "Re" as in "See, Do, Be, Re" because it is reiterative