George S. Ledyard
The plain fact is, much if not most Aikido out there is not being done with any amount of what the other "aiki" arts would agree to call "aiki". Most Aikido practitioners can't define what "aiki" means from the standpoint of waza. They're great on the Cosmic balance stuff but most can't tell you what makes a technique "aiki" and what doesn't. I often ask people to tell me what they think "aiki" is when I teach seminars and almost no one can actually clearly describe what is going on.
You can see this in the discussions about the definition of "aiki" on the language thread. Most Aikido folks have some idea that "aiki" is about avoiding the energy of an attack but their idea of waza is some sort of physical manipulation which is really what I would call a sort of jiu jutsu and not really "aiki" at all.
For this reason I don't see the community arriving at better and more precise definitions. It would make the inconsistencies too apparent...
E-Budo is currently discussing "aiki" in regards to Daito ryu. It's now split into two threads: