Incrementalism is a method of working by adding to or subtracting from a project using many small incremental changes instead of a few (extensively planned) large jumps. Logical incrementalism implies that the steps in the process are sensible.[1] Logical incrementalism focuses on "the Power-Behavioral Approach to planning rather than to the Formal Systems Planning Approach".[1] In public policy, incrementalism is the method of change by which many small policy changes are enacted over time in order to create a larger broad based policy change. Political scientist Charles E. Lindblom developed this theoretical policy of rationality in the 1950s as a middle way between the rational actor model and bounded rationality, as both long term, goal-driven policy rationality and satisficing were not seen as adequate.[citation needed]