Further, they collect all these individual predictions into a global prediction of how the weather will behave The Great Predictor, known as Simon. By plotting their future movements, it should he able to predict the future actions of any individual. Incidentally, the computer was named after Simon de Laplace, the French philosopher and mathematician, who first proposed that any entity that knew the position and trajectory of all the molecules in the universe would know its future. Of course, it wasn't as easy as that. Laplace had been writing in the Seventeenth Century, three hundred years before the discovery of chaos.
Chaotic systems become unpredictable because they are so sensitive to their starting conditions.
The weather is such a system. If you don't take your starting measurements precisely enough, or your packets of air are too large, then after a while the measuring errors you made at the beginning mount up and your prediction goes haywire. Most natural systems tend to be chaotic, so Simon the computer's predictions about human actions are just as fallible. For this reason, he acquired the perhaps uncharitable nickname of Simple Simon. He could equally well have been called Simplistic Simon, since many argued that the human psyche was not like the weather, and human actions could not be predicted simply by plotting the movements of all the chemical and electrical impulses around the brain.