Mid-21st century. Due to the rapid melting of the glaciers, the planet faces a global flood. Geneticists and bioengineers are trying to intervene in the DNA of children not yet born, hoping to create a new type of human—amphibians adapted to life in water. To choose the right strategy before the impending World Flood, scientists develop an artificial intelligence that must predict the future, relying on the analysis of already known data. One group of testers asks the system to produce a planetary-scale political forecast, while another wants it to look into the fate of a particular person. But soon that person is found dead…