I'm the author, so I'm biased. This was the first book of ambigrams (symmetrical lettering). About half the lettering designs still hold up...pretty good for a first time author. I'm eager to make a new version of this book, perhaps for iPad.
I am fascinated by the art of MC Escher. So . . . I found this book fascinating. Also puzzle lovers would probably love it as well. I am also fascinated by how JS Bach put canons, inventions, and fugues together.
While this book, like all books, is made of words, a large majority of the words can be described as art - visual art. Much of it is easier just to see than to describe or explain. For example if you look at the front cover of the book you will see that “Inversions,” the title of the book, when turned upside down is “Scott Kim,” the name of the author.
This entire review has been hidden because of spoilers.
This will change how you see letters. For good. Scott Kim invented this idea and then went on to dazzle everyone with his virtuosity. Amazing. I found it in the 1980s thanks to Scientific American. Calligrapher or psychologist, you'll love it.