This thread seems to be beaten to death!
This thread will never die as long as people keep trying to treat Aikido as some sort of fighting system. As long as folks try to pound a square peg into a round hole, this thread will go on and on as people note that the square peg doesn't fit in the round hole.
Then there will be the never-ending comparison of how other shaped pegs fit more closely into that round hole... all with suggestions about how we can whittle our square peg to approximate these other shapes which more closely fit that round hole.
The end of the process is to have finally whittled the peg into a round peg which fits the hole beautifully only to realize that what has been created in the process isn't Aikido but rather something that has existed long before Aikido was created and the Founder's art is no-where to be found. O-Sensei was as clear as crystal that the peg is square but people simply can't accept that and their fears and insecurities cause them to project their desire to feel "safe" onto the art.
So don't expect this thread to go away any time soon. Folks come and participate until they arrive at their own answer and then they give up and leave and then another generation of folks shows up to debate whether the square peg fits the round hole, whether the peg really is round or whether the hole really is square, and on and on.