Yes Shoji Nishio and others considered these "elements" The Myth of "One Atemi" to the average Aikidoka is just that.... A Myth... Though as one advances in the Aiki Arts One Atemi ( or in the boxer's case the knock out punch) with clear and full intention is enough. The Myth then becomes Reality. I have felt it... and seen it done... and I am open minded and willing to practice hard enough to pursue it... and hopefully express it fully in my practice someday. For now... Maai... Irimi/Atemi and Technique will have to serve as a poor substitute and for those rare times in Randori where I don't think... I just enter... I seem to get by.
"Sincere Heart Through Austere Practice." Shoji Nishio Shihan