• Models in research can find simplicity in complexity, because can explain and represent many challengers to real word. Then, the modelling process can be found issue investigated, with simplification, defining the essence of complex systems.

• There is good and simple models adequate to something complex, giving high utility with transparent, but bad models with returns of information complicated, although of simply phenomena.

• Then, the model to be used needs answers a specific question, contribution to performance, to save money or time, and applied to give a fuller understanding of the processes.

FMVA                                                          Manoel Garcia Neto