My rating: 4 of 5 stars
Clarke manages to craft a strange, and at times morbidly intriguing world. As humanity learns the answer to the age old question “are we alone?” Turns out the answer is no, but the Overlords are mysterious upon their first arrival. Being careful and selective on who they choose to interact , in terms of socially, diplomatically, and psychically. In some way the Overlords are more like the alien version of an anthropologist, observing without bias. Interacting, and guiding humanity as needed. Getting humanity to its next stage of life.