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@@ -319,6 +319,36 @@ complex but deterministic behavior.
 
 % talk a bit about tools here like FRET. Talk about previous attempts.
 
+Human control of nuclear power can be divided into three different scopes:
+strategic, operational, and tactical. Strategic control is the high-level and
+long term decision making for the plant. This level has objectives that are
+complex and economic in scale, such as managing labor needs and supply chains to
+optimize sheduled maintenence and downtime. The time scale on this level of
+control is long, often over months or years. The lowest level of control is the
+tactical level. This is the individual control of pumps, turbines, and
+chemistry of the plant. This level of control has already been somewhat
+automated today in nuclear power, and is generally considered 'automatic
+control' when autonomous. These controls are almost always continuous systems,
+and have a direct impact on the physical state of the plant. Tactical control
+objectives are things like maintaining a pressurizer level, maintaining a
+certain core temperature, or adjusting reactivity with a chemical shim. The level of
+control linking these two levels, then, is the operational control scope.
+Operational control is the primary responsibility of human operators today.
+Operational control takes the current strategic objective, and implements
+tactical control objectives to drive the plant towards strategic goals. In this
+way, it is the bridge between high and low level goals. A strategic goal may be
+to perform refueling at a certain time, while the tactical level of the plant
+currently is focused on mainting a certain core temperature. The operational
+level is what issues the shutdown procedure of the plant, using several smaller
+tactical goals along the way to achieve this objective. Thus, the combination of
+the operational and tactical level of the plant fundamentally forms a hybrid
+controller. The tactical level is the continuous evolution of the plant
+according to the control input and control law, while the operational level is a
+discrete state evolution which determines the tactical control law to reach
+different operational states.
+
+
+
 %%%%%%%%%%%% Building continuous controllers
 
 % The whole point of a hybrid system is that there are continuous components