What a wonderful book. Buy it and enjoy reading every word! That said, I would avoid the kindle option because of the graphs. I would also recommend this book to only those readers who have a solid grounding in cosmology (astronomy & physics). It is not for the lay reader. Also, the clenched fist on the cover and the word revolutionary in the titled have almost nothing to do with the book itself. I suspect they were added to dupe Millenials into buying this excellent book..