 Which effect of Russell's decision to kill Dunbar was likely most surprising to Russell?
TO EACH HIS STAR by BRYCE WALTON "Nothing around those other suns but ashes and dried blood," old Dunbar told the space-wrecked, desperate men. How could they believe in his choice when every star in this forsaken section of space was surrounded by a beckoning red rim? Russell didn't think they could remain sane in all this blackness much longer. After the wreck, the four of them had floated a while, floated and drifted together, four men in bulbous pressure suits like small individual rockets, held together by an awful pressing need for each other and by the "gravity-rope" beam. Dunbar, the oldest of the four, an old space-buster with a face wrinkled like a dried prune, burned by cosmic rays and the suns of worlds so far away they were scarcely credible, had taken command. Four men, thought Russell, held together by an invisible string of gravity, plunging through a lost pocket of hell's dark where there had never been any sound or life, with old Dunbar the first in line, taking the lead because he was older and knew where he was and where he was going. But Russell knew it and he'd admitted it from the first—that old Dunbar was as crazy as a Jovian juke-bird. Russell had no idea now how long the four of them had been plunging toward the red-rimmed sun that never seemed to get any nearer. A meteor ripped the ship down the center like an old breakfast cannister. All Russell knew was that they were millions of light years from any place he had ever heard about, where the galactic space lanterns had absolutely no recognizable pattern. And Russell was looking at Dunbar's suit up ahead, watching it more and more intently, thinking about how Dunbar looked inside that suit—and hating Dunbar more and more for claiming he knew when he didn't, for his drooling optimism—because he was taking them on into deeper darkness and calling their destination Paradise.
 He sabotaged himself by ensuring his loneliness
 The fact that nobody agreed on which sun was the correct one  The decrease in chatter in the communication system  The way the Dunbar died without much drama  He sabotaged himself by ensuring his loneliness