What is the point of aikido osae, the way it is performed?
Why is basic aikido osae done sitting? Surely, there must be other ways to control you partner from standing. Ways that does not restrict your movement, should more attackers emerge. Ways that do not need both your arms, so you can pick up your cell phone and call 112 (911 for US people, no?)
The point of aikido osae waza must be something else. What is built in your body, what does the body learn from performing osae?
They're not pins; they're dislocations.