Originally Posted by
GlassWolf
you really don't see the point? really?
The point, specifically, was that the helmet has a very precise purpose, and even if the helmet does it's job to perfection, you can still be killed any number of other ways that don't involve direct head trauma.
If that is your point, then I *do* see it.
Compare helmet use to fatalities or injuries with the direct cause being head trauma, and you have some useful data.
I don't understand the relevance of this part though. What would that data be useful for? Isn't the ultimate point of the helmets to make us safer? If they fail at that task, it hardly matters that they "perform as designed"... there is no good reason to wear one.
Using your bullet proof vest example, lets say everyone in the army starts wearing them. They work great at stopping bullets, and everyone predicts that fatalities will drop a lot. But instead the enemy shoots soldiers in the head and rate of fatalities stays the same. Are the vests effective?