Karellen explains how they separated the children of Earth and monitored their evolutionary phases, giving him an up-close account with surveillance footage.
Imbued with newfound powers, the children seem in a trance; they need neither food nor water, and no physical obstacles seem able to harm them. They've been this way for years.
Jan realizes the truth about man's destiny: At the end of one path lies the scientific Overlords and their evolutionary dead-end, while at the end of the other lies humanity's art and transformation into the Overmind.
Jan lives as the last human on Earth. He finds happiness improving his piano skills by playing the works of Bach, becoming the best pianist in the world by default.