Bad as Alternative Factor is, the ending with Kirk's lament for Lazarus spending forever with a madman doesn't make sense. There's no indication Lazarus is immortal or that the corridor renders folks immortal, so they are going to die at some point. At least one will throttle the other then what? You got to eat at some point, antimatter burgers? Or sit and watch a corpse till you dehydrate into delirium and death? For that matter, is there air there beyond what came with them? I'm guessing the volume in their ships, so they might suffocate in a few minutes anyway. Then heat, is there any once the corridor is closed? They might be freeze dried the moment the dimension was cut off? How do the Lazaruses die? How gruesomely?