The author took already existing material available on Takamatsu-sensei and played a very liberal game of connect the dots through history. I have no doubt the he spent considerable time compiling snippets of information. I wish he had spent even more time confirming facts and presenting them in a more professional manner. Value is a subjective quality. Had I known what I would be getting I would have bought the book on eBay for $5.00 instead of the authors website for considerably more. I found the finished product very disappointing.