Abstract
To modelise the relations between causes and effects in a system, the major statisticians of the 20th century have found out two breakthrus which lead to dramatic consequences,but are not yet well known:
- The substitution of complex and numerous continuous models by few discrete models.
- The drastic reduction of the number of experiments necessary to compute the coefficients of the selected models.
The simulation is based upon the probability laws of the events related to the components of a system and lead to the behaviour of the system.