Life on Earth is an incomprehensible, omnipresent, teeming with millions of legs, twigs, thorns and teeth orgy in which we exist and from which we come. For three and a half billion years it managed without us, and now, in the last moments of history, a person emerges from this intricacy of animals, plants, fungi and microbes and asks the question: who am I and what is the meaning of my, human, life? In his debut book, evolutionary neuroscientist Nikolai Kukushkin step by step recreates a picture of the world from inanimate matter to the human mind in order to find answers to eternal questions in the past of his species. It turns out that dinosaurs are to blame for human suffering, lungs exist thanks to lichens, and the main event in life our ancestors over the last eon were transformed into worms. "One Hand Clap" is the story of man and his inner world, going all the way from inorganic molecules to the emergence of language, and told as if it were a chivalric romance or a mythical epic.