 While Bob may roll his eyes at Harry's "quixotic" desire to help people, he consistently assists Dresden, even if only by offering testy or critical advice.Bob, though he tries not to let it on too much to Harry, suffers emotionally from his inability to physically affect the world, and he feels responsible when he is unable to stop a woman from getting murderously struck by a car just outside Harry's office.The feeling experienced by a living person when Bob inhabits the same space is quite unsettling.