Fluid statics or hydrostatics is the branch of fluid mechanics that studies fluids at rest. Second, the theory generates powerful equilibrium comparative statics results. The static equilibrium of a particle is an important concept in statics. Usually these methods adapt the controllers to both the process statics and dynamics. The envelope theorem is an important tool for comparative statics of optimization models. In the course of analysis Hicks formalised comparative statics. The methods of monotone comparative statics typically dispense with these assumptions. So the Hicks-Samuelson methods for comparative statics were not applicable. Such conditions conform with principles of fluid statics. The introduction of Herbert Spencer's "Social Statics" argued on behalf of moral sense theory. The process of computing this change is called comparative statics. Each is an example of comparative statics. Yet they got rich comparative statics results. With Stevin and others Galileo also wrote on statics. Official statics put the literacy rate at 43.3%.