the 6th lesson
Here's my opion on the "missing" 6th technique.
Perhaps the Founder wanted us to know that our 6th sense is the most powerful technique we have. This Divine Connection allows us to do the will of God, which may - in turn - manifest itself in the from of ikkyo, nikyo, sankyo..etc...
I happen to enjoy working with textbook techiniques, and studying them to find some hybrid waza. However to try to put these in a book and claim "I have discovered the 6th Lesson!!! Everyone bow before my eternal presence" would bring me from superego into a subtle combination of an idiot and an egomaniac.
This is a great post/thread/idea, many thanks to the guy/girl who initiated it...