George S. Ledyard
Its not that simple.... you as the attacker are doing the same thing. When I grab you, or even put my "target acquisition system" on you to strike, I am also incorporating you in my mapping system. Aiki incorporates various ways in which that gets manipulated. But yes, I think this is the origin of the phrase "ittai-ka" or single-body which the Founder talked about.
But isn't the attacker doing something fundamentally different--ie, not trying to "join" with me, so therefore not aiki? In fact, if the shomen-uchi is made with intent even at a slow speed, then its purpose is to make my one body into two parts--to split me right down the middle. Or am i missing something?