Well while Ryan and Fred look having a valid concern,
on this particular
issue
I have no idea what you guys discuss.
The article seems to be a full translation of Japanese Wikipedia
article which seem to be based on three Japanese books (see
"references" in the jawiki article) all in paper, not robo-books.
The article, on which the translation had not been cleaned up when I last
looked at it, is about 1 page long, maybe 3. The rest of the 98 page book
was filled with other vaguely related Wikipedia articles. Not much for
$50.
Fred