contrasting Ueshiba's demonstration of 1935 with this from Seishiro Endo Sensei in 2004, Endo Sensei's demonstration has many similarities but a very different feel. Endo Sensei makes the techniques look effortless, as if he's not putting any strength into them at all and yet the way he takes uke's posture and uses his hips as an obstruction when throwing feel far more "legitimate" than O'Sensei's techniques. I can see clearly that Endo Sensei is centred the whole time but the way he attacks the head, so as to take uke's balance shows he is in clear control and uke has to take ukemi. His internalization of the techniques still looks effective externally.
http://store.aikidojournal.com/seish...demonstration/