Re: Atteru and Ki
I am a student of Robert House and I have had the honor of attending one of Endo's only two US visits. The principle as taught by Robert House Sensei is the uke and nage's ki coming together and forming a new energy.
I am sure Robert House Sensei would love to explain it further if anyone would like to email him.
BTW, if you get a chance to see any of Endo's clips on youtube.com, you may be able to see what they're talking about.