Flat Jumpers: A Novel in Many Dimensions is a philosophical allegory by writer Edwin Abbott Abbott, which tells the story of the life and adventures of a square inhabitant of a flat world named A. Square. He accidentally learns about the existence of higher dimensions and visits worlds with different numbers of dimensions, where he encounters different cultures and social systems. The book not only reveals the concept of dimensions in a philosophical way, but also emphasizes the general theme of tolerance and the importance of understanding the other. "Ploskochintsi" is an exciting and provocative journey for the reader into the world, which forces him to rethink his ideas about reality and perception of the surrounding world.