Paolo Bisogno and Augusto Forti Taking an interest in the future is among the most instinctive Conscious of the existence of time as well as of human activities. space, man has always tried to guess what the future holds. Until recently scholars have left the field of speculation to the pseudo sciences of astrology and palmistry or to the ambiguities of the oracles. Imaginative writers have made some brilliant contributions, but the development of mathematical modelling and other predictive techniques are relatively recent arrivals. The new techniques have come at just the right moment. Today...