Prophet-4. De Profundis

The story moves to its logical conclusion. The world is crumbling before our eyes Professor Stanton as a house of cards. However, he has a unique chance to make the only right choice, returning to the cue point before the start of the cataclysm. How to convince his alter ego to abandon scientific ambition, fame and laurels alleged discoverer of a mysterious sphere? What choice do Jack Stanton?