188 PONTIFICIAE ACADEMIAE SCIENTIARVM SCRIPTA VARIA - 28 
advocate the strategy method to Turkey, Egypt and Iran, it 
may turn out after half a century that our advice was good 
for Turkey and Egypt, but not for Iran. This should be stated 
frankly to the policy makers concerned, which can be done 
easily with the aid of a simulation experiment. In fact, this is 
another, practical advantage of the simulation method: pre- 
senting its results in tabular and graphical form to laymen is 
far simpler than the presentation of many sheets of algebra. 
This advantage remains even when it is true, as in the case 
considered here, that the model used is not very complicated. 
7 Theil - pag. 24