The author believes it important that the reader is informed that the current world champion, Garry Kasparov, is of Armenian and Jewish heritage. We are not told that Steinitz, Lasker or Botvinnik were Jewish. Fischer's mother, like Kasparov's father, was Jewish. We are not so informed. Hopefully he did not hurt himself running into Emanuel, as their first world championship match wherein Lasker won the title, was two years later, in 1894.
Typographical errors abound.
Graphs are occasionally used to underscore statistics or demonstrate trends. The keys to the graphs are incomprehensible and the significance mystifying. And take a look at two of the introductory paragraphs to one of the graph presentations. Most have had a strong preference for either 1 e4 or 1 d4, though a few have a more balanced view. Even in these cases, however, no champion has used moves other than 1 e4 and 1 d4 for more than about a quarter of their games.