Soviet Union will flourish

W. Warren Wagar : historian, futurologist
USSR will continue its existence minimum until XXIII century
The prediction became false on 2 month after publication, when Soviet Union collapsed, actually through all his book he is just putting finger in the air, though being historian and scientist the book isn't scientific.

Wagar, W. Warren. 1989. A short history of the future. Chicago: University of Chicago Press.