Is it fantasy that the exact social conditions prevailing today (spiritual ignorance, exploitative governments, etc.) were predicted over 5,000 years ago in the Vedic literature Śrīmad-Bhāgavatam? Is it fantasy that we started writing about the present economic/political crisis back in 2002? No, Asimov's psychohistory is simply fantasy, because human consciousness can never be understood by mathematics, especially statistics. Vedic psychohistory is factual, and you can learn more
here.