There is much speculation flying around as to what the word "Aiki" may mean. The ideas that seem to pop up the most are:
A) Aiki, is a term that is describing a way to understand, lead, manipulate or physically blend with the mind and intentions of an attacker.
B) A body ability that gives it's practitioner great physical power, making them seem unmovable and strangely forceful.
Two sides of the same coin. Aiki is, ultimately, about unification. Time for Aikido folks to end this war and realize that development of both aspects of Aiki are needed for the practitioner to become adept at the art of Aikido.
Place the immovable body in the midst of a crowd of attackers and the result will be an immovable stain on the ground. Likewise, technique executed by simply mimicking the movements of the instructor without the application of power that comes from a unified mind and body will result in an honest uke moving through nage like fire through a field of dry wheat.
Both sides in this debate bring added value to the table. Time has come to abandon the dogma that characterizes entrenched positions and approach Aiki in a holistic manner that recognizes its multifaceted nature.