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Old 01-15-2007, 01:45 PM   #24
Erick Mead
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Dojo: Big Green Drum (W. Florida Aikikai)
Location: West Florida
Join Date: Jun 2005
Posts: 2,619
Re: Baseline skillset

John Riggs wrote:
That's why I prefer to think of things as sphere, tetrahedron and box. That way the forces can somewhat be viewed multi-dimensionally.
Ueshiba spoke of "a limited sphere of strength" outside of which no opposition is possible. There is reason to believe he may have been speaking at a micro-level as well as a macro-level.
John Riggs wrote:
I think the dynamic element has to be there in the sense the human tensegrity unit has a lot of weaknesses. As such, points of unbalancing are easily exploited. An adapting tensegrity on the other hand has the potential to be stronger if the sensitivity of the practitioner is such that adjustments can be made.
The questions of "what adjustment" and "what sensation triggers adjustment" are key.

For an alternative model of adaptive static equilibrium try "Colulomb's Memoir on Statics." Jacques Heyman, tr.

The principles are graphically illustrated by an inverted chain of spheres on the cover of the 1998 edition. See here:

The adaptive signal for that model is any force differential outside the center of the articulating joint.


Erick Mead
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