# It is more probable than not that, within the twentieth century, an ultra-intelligent… by I. J. Good > "It is more probable than not that, within the twentieth century, an ultra-intelligent machine will be built." > **— I. J. Good**, *1960s prediction attribution; primary source pending* Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: 1960s prediction attribution; primary source pending.