Robert Silverberg 
Stochastic Man [EPUB ebook] 

Lew Nichols’ business, at the end of the twentieth century, was stochastic prediction — high-powered guesswork. He was very good at this well-paid, sophisticated form of witchcraft. And he was quite content with the sultry Indian beauty he had married. In fact, Lew Nichols was more than satisfied with his life. Until the day in March ’99 when he met Martin Carvajal. Lew got strange vibrations from the eccentric millionaire from the start. But Carvajal took a special interest in Lew. He wanted to teach him to SEE the future — not just guess at it.But the power to see the future did not prepare Lew for the horrifying possibilities it offered.(First published 1975)