the crashes that would be forceful enough to paralyze me wouldnt be helped at all by a helmet. a helmet would lessen the severeity of concussion...but not by a whole lot.
I have taken some gnarly, out of control, high speed falls in some bad places and never hit my head on anything. I have wiley coyote'ed a tree and didnt have a scratch on my face. It is completely natural instinct protect my head at all costs.
Isint it something like the eps helmets are only certified up to 15mph? and that number would go down the bigger you are. hard hats do almost nothing other than preventing a cut or bruise to your head.
also, the rate of injuries while wearing a helmet is way higher than when not wearing one. FACT. haha
All that said, i wear a hardhat because i, for some reason, get hit in the head about once every two time to the mtn, while loading the fucking chairlift. either get decked by the chair arm or someone pulls the bar down on me.