I heard about this book from a friend who is a freelance proof reader. She'd read it and admitted that most of it had gone straight over her head. However she did recommend it highly.I picked up a copy at the same time as [book:Flatland] and read the two books one after the other.Whereas the first book was about a flat being being shown life in three dimensions, Flatterland shows the adventures of a person being taken into a world of many non-euclidian dimensions. The space it talks about is often well understood by mathematicians, but because they bear no resemblance to normal space they are completely mysterious to the uninitiated. And they have strange properties! A flat plane where parallel lines converge (despite the definition of a pair of parallel lines is that they don't do that!) and a myriad of other oddities.In reality the stories told in this book are not as striking as those of Flatland. This is at least in part because as people in a three dimensional universe we understand almost instinctively the nature of that reality. That means we understand the original story more strongly than those strange worlds that this book talks of. But it is still a magnificent book, and the ideal thought provoker for those interested in geometry and maths. ( )

An interesting extension of the ideas covered in Flatland. ( )

This and Flatland are books even the mathematically-challenged should read to help them understand not just math, but their prespective of life. ( )

This is such a cute book!

f you're a math nerd (like me), then this book will really tickle your fancy. Just please read Flatland first! ( )

Whimsical, pun-laden (e.g. Moobius the one-sided cow) tale touching on extradimensionality, fractals, topology, non-Euclidean geometry, quantum physics, relativity, time travel, cosmology, string theory. A delight.