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April 4, 2019, 9:43 a.m. -  The Chez

The rotational motion can be measured, yes, but until we understand what impact that really has on the brain (including other variables from other planes at specified angles) we won't be able to quantify it. I'm all for making things more safe and a hunk of styrofoam is better than no helmet but claiming these devices will save necks and brains is a reach.

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