A gum shield with a sensor is measuring the acceleration inside the skull, it has nothing to with helmets or padding.
We're going to have to agree to disagree. Try googling: What force will crush bone? to get some actual information.
What relevance is that?! ...no doubt you're right the director of the university's Center for Injury Biomechanics knows nothing about it
I'm sorry but if you think that's actually relevant then there's really no point in carrying on this discussion.
I've already said that. You appear not to understand what you're reading. The two articles put different spins on the same data. Over and out.