Re: Yoshinkan and "aiki"
Great post Mark much appreciated. I'll have to reread my copy of Total aikido.
Hong Junsheng also states as much in his book on Chen taiji. (I believe you have a copy of the English version) I like and agree with the examples given by Dan though i also feel that rather than a single pivot there is actual a second one so that the body can respond vertically as well. I mean that the body becomes a ball so that if you push down you are hit from above if you push up you are hit from below etc.