Originally Posted by buro9
The answer is: Yes if you have an accident that involves your head hitting something. No if you have an accident in which your head hits nothing but any other part of your body hits something.
Haha. I just provided a link to a long analysis that quotes/references 44 studies with hugely conflicting data and expert views, and you know the answer.
The answer (well, one answer) is: the helmet may
cause your head to hit something, and if the crash is really serious, it's pretty much useless.