Hmm. While an interesting little piece, it's not really what it's billed as being. For one thing, the Takenouchi Ryu is still quite alive, and practiced in a number of forms (the Soke line, the Sodenke line, the Bitchu-den Takeuchi Ryu, the Takenouchi Santo Ryu...), so such a text would hardly need to be "discovered and deciphered". From there, there seems to be a large attempt to equate what the single document from one Ryu states with the way all samurai trained and were educated... which simply isn't the case. The cited academic (Szabo) also gets a fair bit wrong... making generalizations (and, in cases, inaccurate ones), rather than demonstrating any real familiarity with the subject itself. For the record.