Victorian social satire meets fourth-dimensional geometry! Told from the perspective of a rather ordinary Square living in a strictly regimented two-dimensional world, Flatland offers myriad existential and mathematical challenges for even the sharpest mind. When a visiting Sphere from the third dimension reveals to our plane-bound protagonist previously unknown knowledge of the physical universe, he can never see his native Flatland the same way again. A must read for math/physics geeks and social scientists alike.