Don't buy cheap paperbacks just to save a few dollars. Most of them use low-quality papers & binding. Their pages fall off easily. Some of them even use very small font size of 6 or less to increase their profit margin. It makes their books completely unreadable.
About FlatlandFlatland: A Romance of Many Dimensions is an 1884 satirical novella by the English schoolmaster Edwin Abbott Abbott. Writing pseudonymously as "A Square", the book used the fictional two-dimensional world of Flatland to comment on the hierarchy of Victorian culture, but the novella's more enduring contribution is its examination of dimensions. Several films have been made from the story, including the feature film Flatland (2007). Other efforts have been short or experimental films, including one narrated by Dudley Moore and the short films Flatland: The Movie (2007) and Flatland 2: Sphereland (2012) starring Martin Sheen and Kristen Bell