Simulation of the Inaccessible or Impossible ex. Controlling Experimentation and Testing Testing the simulated model of a complicated system is sometimes more feasible than testing the real thing. Models of continuous systems have quantities which vary smoothly or in a continuous manner. Models of discrete systems have quantities which vary in steps or jumps. Predictable systems have models which predict exactly what will happen.
Probabilistic systems have models which contain unpredictable features.
Systems or models which feed results back to the input are referred to as feedback systems . The population increases and decreases according to fixed rules which affect the birth and death of individual bacterium. Each cell in the grid can contain a bacterium or be empty. Each cell has 8 neighbors except that cells on the boundary have less than 8 neighbors. A bacteria with 2 or 3 neighbors survives from one generation to the next.