This model is a progressive decision-making model. The incremental decision-making model is a policy-making model proposed by American political scientist and policy scientist Charles Lindblom. The model emphasizes that policy formulation is a step-by-step, incremental process, not a one-time event. Lindblom believes that policymakers face highly complex and uncertain problems and often adopt an incremental approach to formulating policies, gradually improving policies through small-scale experiments and adjustments.

The advantage of the incremental decision-making model is that it reduces policy risks and uncertainties, and can also gradually improve policies to adapt to the changing environment.