Childhood's End, written by Arthur C. Clarke, is a thought-provoking science fiction novel that delves into the concept of alien technology and its effect on human evolution. The story takes place in a future where Earth is visited by a highly advanced alien race known as the Overlords. These aliens bring peace and prosperity to humanity, but at a cost. As the Overlords introduce their advanced technology, they also guide humanity towards a new stage of evolution. Childhood's End explores profound philosophical questions about the nature of humanity and the impact of alien technology.