On 10/26/2012 12:06 AM, Frank Krygowski wrote:
And in fact, there has been more knowledge gained since 1998. For
example, the much greater dangers of rotational, rather than
translational, accelerations of the brain and skull were not commonly
recognized back then. (Helmets do nothing against rotational
acceleration, and may even exacerbate it.)

Hmmm...

http://www.pocsports.com/en/content/view/new-technologies#MIPS

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