Is this a failure of the SFI spec, or a failure of your design ? [/b]
It's a failure of the SFI design. The spec includes design criteria, remember?

Other systems have passed these tests...how can that be "the same results you get with any SFI design" ?[/b]
Because "passing the test" means only Fz and My loads under the respective thresholds, which we can do. It does not, however, give any consideration whatsoever to the other seven primary head loads, the principle loads existing in the axial, sagittal and coronal planes at the head-neck junction, nor keeping the belts on the body. Niggly stuff like that.

When you designed that system, what was your position on the system being "released" ? It certainly seems to have changed today.[/b]
We were neutral on it. Initially we were for it (pre any design or testing), then EMTs convinced us otherwise, then we thought we should give the idea a chance, then we witnessed it not working and ran away as fast as possible.

Can you direct us to that documentation ? We would all like to see it.[/b]
Well, for those inclined toward the graphic, one could start with Chad McQueen's cervical spine X-rays. For the numerically inclined, we would suggest SAE paper #2006-01-3631, from which the following are extracted:

<div align="center">



</div>