Well for the scientific detail oriented mind ,other than the nerdish computer language operators of satellite imagery of the cosmos, we're left flat by not witnessing the actual invasion. A Group of well manicured, well politically and socially groomed protagonists, gives us a sense of our self-centered arrogant human lives as the only existence in the universe, as they walk through a sparsely inhabited already decimated landscape. The viewer is left with the the pie already eaten. But picking up the crumbs each episode we delve further into what the title of the show is supposed to have given us. Trapsing slowly through a world of 9 billion people with not a trace of them lying around in the streets, we're supposed to believe the world is at war... just like we're supposed to believe that an astronaut floating in a no atmosphere environment can swim back to her ship. It's this kind of logic which leads me to believe that the writers and purveyors of the show took their best liked aspects of other shows and did a adequate job at trying to emulate the thrill and the suspense with none of the realism of the events impact. Without any substance to back up that failing perspective , of how our technology could not prevent this kind of psychological invasion, we're left with some extra sensory power social misfit teen, to defeat a superior invading force of star fishes bent on chasing all humans down a rat hole.